42640780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3347}}^1$

素因数の和:3383

約数の個数: 72

約数和(自身を含む): 112211568

約数和(自身を除く): 69570788

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2548, 3185, 3347, 6370, 6694, 12740, 13388, 16735, 23429, 33470, 43511, 46858, 66940, 87022, 93716, 117145, 164003, 174044, 217555, 234290, 304577, 328006, 435110, 468580, 609154, 656012, 820015, 870220, 1218308, 1522885, 1640030, 2132039, 3045770, 3280060, 4264078, 6091540, 8528156, 10660195, 21320390, 42640780]

約数ペア:

[(1, 42640780), (2, 21320390), (4, 10660195), (5, 8528156), (7, 6091540), (10, 4264078), (13, 3280060), (14, 3045770), (20, 2132039), (26, 1640030), (28, 1522885), (35, 1218308), (49, 870220), (52, 820015), (65, 656012), (70, 609154), (91, 468580), (98, 435110), (130, 328006), (140, 304577), (182, 234290), (196, 217555), (245, 174044), (260, 164003), (364, 117145), (455, 93716), (490, 87022), (637, 66940), (910, 46858), (980, 43511), (1274, 33470), (1820, 23429), (2548, 16735), (3185, 13388), (3347, 12740), (6370, 6694)]