31740280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:245

約数の個数: 128

約数和(自身を含む): 87091200

約数和(自身を除く): 55350920

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 31, 40, 44, 52, 55, 62, 65, 88, 104, 110, 124, 130, 143, 155, 179, 220, 248, 260, 286, 310, 341, 358, 403, 440, 520, 572, 620, 682, 715, 716, 806, 895, 1144, 1240, 1364, 1430, 1432, 1612, 1705, 1790, 1969, 2015, 2327, 2728, 2860, 3224, 3410, 3580, 3938, 4030, 4433, 4654, 5549, 5720, 6820, 7160, 7876, 8060, 8866, 9308, 9845, 11098, 11635, 13640, 15752, 16120, 17732, 18616, 19690, 22165, 22196, 23270, 25597, 27745, 35464, 39380, 44330, 44392, 46540, 51194, 55490, 61039, 72137, 78760, 88660, 93080, 102388, 110980, 122078, 127985, 144274, 177320, 204776, 221960, 244156, 255970, 288548, 305195, 360685, 488312, 511940, 577096, 610390, 721370, 793507, 1023880, 1220780, 1442740, 1587014, 2441560, 2885480, 3174028, 3967535, 6348056, 7935070, 15870140, 31740280]

約数ペア:

[(1, 31740280), (2, 15870140), (4, 7935070), (5, 6348056), (8, 3967535), (10, 3174028), (11, 2885480), (13, 2441560), (20, 1587014), (22, 1442740), (26, 1220780), (31, 1023880), (40, 793507), (44, 721370), (52, 610390), (55, 577096), (62, 511940), (65, 488312), (88, 360685), (104, 305195), (110, 288548), (124, 255970), (130, 244156), (143, 221960), (155, 204776), (179, 177320), (220, 144274), (248, 127985), (260, 122078), (286, 110980), (310, 102388), (341, 93080), (358, 88660), (403, 78760), (440, 72137), (520, 61039), (572, 55490), (620, 51194), (682, 46540), (715, 44392), (716, 44330), (806, 39380), (895, 35464), (1144, 27745), (1240, 25597), (1364, 23270), (1430, 22196), (1432, 22165), (1612, 19690), (1705, 18616), (1790, 17732), (1969, 16120), (2015, 15752), (2327, 13640), (2728, 11635), (2860, 11098), (3224, 9845), (3410, 9308), (3580, 8866), (3938, 8060), (4030, 7876), (4433, 7160), (4654, 6820), (5549, 5720)]