489860140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{331}}^1$

素因数の和:420

約数の個数: 144

約数和(自身を含む): 1329253632

約数和(自身を除く): 839393492

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 31, 35, 44, 55, 62, 70, 77, 110, 124, 140, 154, 155, 217, 220, 308, 310, 331, 341, 385, 434, 620, 662, 682, 770, 868, 961, 1085, 1324, 1364, 1540, 1655, 1705, 1922, 2170, 2317, 2387, 3310, 3410, 3641, 3844, 4340, 4634, 4774, 4805, 6620, 6727, 6820, 7282, 9268, 9548, 9610, 10261, 10571, 11585, 11935, 13454, 14564, 18205, 19220, 20522, 21142, 23170, 23870, 25487, 26908, 33635, 36410, 41044, 42284, 46340, 47740, 50974, 51305, 52855, 67270, 71827, 72820, 73997, 101948, 102610, 105710, 112871, 127435, 134540, 143654, 147994, 205220, 211420, 225742, 254870, 287308, 295988, 318091, 359135, 369985, 451484, 509740, 564355, 636182, 718270, 739970, 790097, 1128710, 1272364, 1436540, 1479940, 1580194, 1590455, 2226637, 2257420, 3160388, 3180910, 3499001, 3950485, 4453274, 6361820, 6998002, 7900970, 8906548, 11133185, 13996004, 15801940, 17495005, 22266370, 24493007, 34990010, 44532740, 48986014, 69980020, 97972028, 122465035, 244930070, 489860140]

約数ペア:

[(1, 489860140), (2, 244930070), (4, 122465035), (5, 97972028), (7, 69980020), (10, 48986014), (11, 44532740), (14, 34990010), (20, 24493007), (22, 22266370), (28, 17495005), (31, 15801940), (35, 13996004), (44, 11133185), (55, 8906548), (62, 7900970), (70, 6998002), (77, 6361820), (110, 4453274), (124, 3950485), (140, 3499001), (154, 3180910), (155, 3160388), (217, 2257420), (220, 2226637), (308, 1590455), (310, 1580194), (331, 1479940), (341, 1436540), (385, 1272364), (434, 1128710), (620, 790097), (662, 739970), (682, 718270), (770, 636182), (868, 564355), (961, 509740), (1085, 451484), (1324, 369985), (1364, 359135), (1540, 318091), (1655, 295988), (1705, 287308), (1922, 254870), (2170, 225742), (2317, 211420), (2387, 205220), (3310, 147994), (3410, 143654), (3641, 134540), (3844, 127435), (4340, 112871), (4634, 105710), (4774, 102610), (4805, 101948), (6620, 73997), (6727, 72820), (6820, 71827), (7282, 67270), (9268, 52855), (9548, 51305), (9610, 50974), (10261, 47740), (10571, 46340), (11585, 42284), (11935, 41044), (13454, 36410), (14564, 33635), (18205, 26908), (19220, 25487), (20522, 23870), (21142, 23170)]