28027720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3229}}^1$

素因数の和:3278

約数の個数: 64

約数和(自身を含む): 74419200

約数和(自身を除く): 46391480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 3229, 4340, 6458, 8680, 12916, 16145, 22603, 25832, 32290, 45206, 64580, 90412, 100099, 113015, 129160, 180824, 200198, 226030, 400396, 452060, 500495, 700693, 800792, 904120, 1000990, 1401386, 2001980, 2802772, 3503465, 4003960, 5605544, 7006930, 14013860, 28027720]

約数ペア:

[(1, 28027720), (2, 14013860), (4, 7006930), (5, 5605544), (7, 4003960), (8, 3503465), (10, 2802772), (14, 2001980), (20, 1401386), (28, 1000990), (31, 904120), (35, 800792), (40, 700693), (56, 500495), (62, 452060), (70, 400396), (124, 226030), (140, 200198), (155, 180824), (217, 129160), (248, 113015), (280, 100099), (310, 90412), (434, 64580), (620, 45206), (868, 32290), (1085, 25832), (1240, 22603), (1736, 16145), (2170, 12916), (3229, 8680), (4340, 6458)]