20578110

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:186

約数の個数: 128

約数和(自身を含む): 60825600

約数和(自身を除く): 40247490

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 29, 30, 31, 35, 42, 58, 62, 70, 87, 93, 105, 109, 145, 155, 174, 186, 203, 210, 217, 218, 290, 310, 327, 406, 434, 435, 465, 545, 609, 651, 654, 763, 870, 899, 930, 1015, 1085, 1090, 1218, 1302, 1526, 1635, 1798, 2030, 2170, 2289, 2697, 3045, 3161, 3255, 3270, 3379, 3815, 4495, 4578, 5394, 6090, 6293, 6322, 6510, 6758, 7630, 8990, 9483, 10137, 11445, 12586, 13485, 15805, 16895, 18879, 18966, 20274, 22127, 22890, 23653, 26970, 31465, 31610, 33790, 37758, 44254, 47306, 47415, 50685, 62930, 66381, 70959, 94395, 94830, 97991, 101370, 110635, 118265, 132762, 141918, 188790, 195982, 221270, 236530, 293973, 331905, 354795, 489955, 587946, 663810, 685937, 709590, 979910, 1371874, 1469865, 2057811, 2939730, 3429685, 4115622, 6859370, 10289055, 20578110]

約数ペア:

[(1, 20578110), (2, 10289055), (3, 6859370), (5, 4115622), (6, 3429685), (7, 2939730), (10, 2057811), (14, 1469865), (15, 1371874), (21, 979910), (29, 709590), (30, 685937), (31, 663810), (35, 587946), (42, 489955), (58, 354795), (62, 331905), (70, 293973), (87, 236530), (93, 221270), (105, 195982), (109, 188790), (145, 141918), (155, 132762), (174, 118265), (186, 110635), (203, 101370), (210, 97991), (217, 94830), (218, 94395), (290, 70959), (310, 66381), (327, 62930), (406, 50685), (434, 47415), (435, 47306), (465, 44254), (545, 37758), (609, 33790), (651, 31610), (654, 31465), (763, 26970), (870, 23653), (899, 22890), (930, 22127), (1015, 20274), (1085, 18966), (1090, 18879), (1218, 16895), (1302, 15805), (1526, 13485), (1635, 12586), (1798, 11445), (2030, 10137), (2170, 9483), (2289, 8990), (2697, 7630), (3045, 6758), (3161, 6510), (3255, 6322), (3270, 6293), (3379, 6090), (3815, 5394), (4495, 4578)]