20275220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{1217}}^1$

素因数の和:1257

約数の個数: 72

約数和(自身を含む): 52486056

約数和(自身を除く): 32210836

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 49, 68, 70, 85, 98, 119, 140, 170, 196, 238, 245, 340, 476, 490, 595, 833, 980, 1190, 1217, 1666, 2380, 2434, 3332, 4165, 4868, 6085, 8330, 8519, 12170, 16660, 17038, 20689, 24340, 34076, 41378, 42595, 59633, 82756, 85190, 103445, 119266, 144823, 170380, 206890, 238532, 289646, 298165, 413780, 579292, 596330, 724115, 1013761, 1192660, 1448230, 2027522, 2896460, 4055044, 5068805, 10137610, 20275220]

約数ペア:

[(1, 20275220), (2, 10137610), (4, 5068805), (5, 4055044), (7, 2896460), (10, 2027522), (14, 1448230), (17, 1192660), (20, 1013761), (28, 724115), (34, 596330), (35, 579292), (49, 413780), (68, 298165), (70, 289646), (85, 238532), (98, 206890), (119, 170380), (140, 144823), (170, 119266), (196, 103445), (238, 85190), (245, 82756), (340, 59633), (476, 42595), (490, 41378), (595, 34076), (833, 24340), (980, 20689), (1190, 17038), (1217, 16660), (1666, 12170), (2380, 8519), (2434, 8330), (3332, 6085), (4165, 4868)]