668875220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{2677}}^1$

素因数の和:2761

約数の個数: 72

約数和(自身を含む): 1563641352

約数和(自身を除く): 894766132

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 961, 1612, 1922, 2015, 2677, 3844, 4030, 4805, 5354, 8060, 9610, 10708, 12493, 13385, 19220, 24986, 26770, 34801, 49972, 53540, 62465, 69602, 82987, 124930, 139204, 165974, 174005, 249860, 331948, 348010, 414935, 696020, 829870, 1078831, 1659740, 2157662, 2572597, 4315324, 5145194, 5394155, 10290388, 10788310, 12862985, 21576620, 25725970, 33443761, 51451940, 66887522, 133775044, 167218805, 334437610, 668875220]

約数ペア:

[(1, 668875220), (2, 334437610), (4, 167218805), (5, 133775044), (10, 66887522), (13, 51451940), (20, 33443761), (26, 25725970), (31, 21576620), (52, 12862985), (62, 10788310), (65, 10290388), (124, 5394155), (130, 5145194), (155, 4315324), (260, 2572597), (310, 2157662), (403, 1659740), (620, 1078831), (806, 829870), (961, 696020), (1612, 414935), (1922, 348010), (2015, 331948), (2677, 249860), (3844, 174005), (4030, 165974), (4805, 139204), (5354, 124930), (8060, 82987), (9610, 69602), (10708, 62465), (12493, 53540), (13385, 49972), (19220, 34801), (24986, 26770)]