16921660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{557}}^1$

素因数の和:611

約数の個数: 72

約数和(自身を含む): 42747264

約数和(自身を除く): 25825604

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 557, 620, 868, 980, 1085, 1114, 1519, 2170, 2228, 2785, 3038, 3899, 4340, 5570, 6076, 7595, 7798, 11140, 15190, 15596, 17267, 19495, 27293, 30380, 34534, 38990, 54586, 69068, 77980, 86335, 109172, 120869, 136465, 172670, 241738, 272930, 345340, 483476, 545860, 604345, 846083, 1208690, 1692166, 2417380, 3384332, 4230415, 8460830, 16921660]

約数ペア:

[(1, 16921660), (2, 8460830), (4, 4230415), (5, 3384332), (7, 2417380), (10, 1692166), (14, 1208690), (20, 846083), (28, 604345), (31, 545860), (35, 483476), (49, 345340), (62, 272930), (70, 241738), (98, 172670), (124, 136465), (140, 120869), (155, 109172), (196, 86335), (217, 77980), (245, 69068), (310, 54586), (434, 38990), (490, 34534), (557, 30380), (620, 27293), (868, 19495), (980, 17267), (1085, 15596), (1114, 15190), (1519, 11140), (2170, 7798), (2228, 7595), (2785, 6076), (3038, 5570), (3899, 4340)]