21912675760

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1\times {\mathrm{373}}^1$

素因数の和:735

約数の個数: 160

約数和(自身を含む): 53291589120

約数和(自身を除く): 31378913360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 89, 148, 178, 185, 223, 296, 356, 370, 373, 445, 446, 592, 712, 740, 746, 890, 892, 1115, 1424, 1480, 1492, 1780, 1784, 1865, 2230, 2960, 2984, 3293, 3560, 3568, 3730, 4460, 5968, 6586, 7120, 7460, 8251, 8920, 13172, 13801, 14920, 16465, 16502, 17840, 19847, 26344, 27602, 29840, 32930, 33004, 33197, 39694, 41255, 52688, 55204, 65860, 66008, 66394, 69005, 79388, 82510, 83179, 99235, 110408, 131720, 132016, 132788, 138010, 158776, 165020, 165985, 166358, 198470, 220816, 263440, 265576, 276020, 317552, 330040, 331970, 332716, 396940, 415895, 531152, 552040, 660080, 663940, 665432, 734339, 793880, 831790, 1104080, 1228289, 1327880, 1330864, 1468678, 1587760, 1663580, 2456578, 2655760, 2937356, 3077623, 3327160, 3671695, 4913156, 5874712, 6141445, 6155246, 6654320, 7343390, 7402931, 9826312, 11749424, 12282890, 12310492, 14686780, 14805862, 15388115, 19652624, 24565780, 24620984, 29373560, 29611724, 30776230, 37014655, 49131560, 49241968, 58747120, 59223448, 61552460, 74029310, 98263120, 118446896, 123104920, 148058620, 246209840, 273908447, 296117240, 547816894, 592234480, 1095633788, 1369542235, 2191267576, 2739084470, 4382535152, 5478168940, 10956337880, 21912675760]

約数ペア:

[(1, 21912675760), (2, 10956337880), (4, 5478168940), (5, 4382535152), (8, 2739084470), (10, 2191267576), (16, 1369542235), (20, 1095633788), (37, 592234480), (40, 547816894), (74, 296117240), (80, 273908447), (89, 246209840), (148, 148058620), (178, 123104920), (185, 118446896), (223, 98263120), (296, 74029310), (356, 61552460), (370, 59223448), (373, 58747120), (445, 49241968), (446, 49131560), (592, 37014655), (712, 30776230), (740, 29611724), (746, 29373560), (890, 24620984), (892, 24565780), (1115, 19652624), (1424, 15388115), (1480, 14805862), (1492, 14686780), (1780, 12310492), (1784, 12282890), (1865, 11749424), (2230, 9826312), (2960, 7402931), (2984, 7343390), (3293, 6654320), (3560, 6155246), (3568, 6141445), (3730, 5874712), (4460, 4913156), (5968, 3671695), (6586, 3327160), (7120, 3077623), (7460, 2937356), (8251, 2655760), (8920, 2456578), (13172, 1663580), (13801, 1587760), (14920, 1468678), (16465, 1330864), (16502, 1327880), (17840, 1228289), (19847, 1104080), (26344, 831790), (27602, 793880), (29840, 734339), (32930, 665432), (33004, 663940), (33197, 660080), (39694, 552040), (41255, 531152), (52688, 415895), (55204, 396940), (65860, 332716), (66008, 331970), (66394, 330040), (69005, 317552), (79388, 276020), (82510, 265576), (83179, 263440), (99235, 220816), (110408, 198470), (131720, 166358), (132016, 165985), (132788, 165020), (138010, 158776)]