490697420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{21169}}^1$

素因数の和:21258

約数の個数: 48

約数和(自身を含む): 1102533600

約数和(自身を除く): 611836180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 61, 76, 95, 122, 190, 244, 305, 380, 610, 1159, 1220, 2318, 4636, 5795, 11590, 21169, 23180, 42338, 84676, 105845, 211690, 402211, 423380, 804422, 1291309, 1608844, 2011055, 2582618, 4022110, 5165236, 6456545, 8044220, 12913090, 24534871, 25826180, 49069742, 98139484, 122674355, 245348710, 490697420]

約数ペア:

[(1, 490697420), (2, 245348710), (4, 122674355), (5, 98139484), (10, 49069742), (19, 25826180), (20, 24534871), (38, 12913090), (61, 8044220), (76, 6456545), (95, 5165236), (122, 4022110), (190, 2582618), (244, 2011055), (305, 1608844), (380, 1291309), (610, 804422), (1159, 423380), (1220, 402211), (2318, 211690), (4636, 105845), (5795, 84676), (11590, 42338), (21169, 23180)]