2018949880

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{64793}}^1$

素因数の和:64864

約数の個数: 64

約数和(自身を含む): 4898426400

約数和(自身を除く): 2879476520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 760, 779, 820, 1558, 1640, 3116, 3895, 6232, 7790, 15580, 31160, 64793, 129586, 259172, 323965, 518344, 647930, 1231067, 1295860, 2462134, 2591720, 2656513, 4924268, 5313026, 6155335, 9848536, 10626052, 12310670, 13282565, 21252104, 24621340, 26565130, 49242680, 50473747, 53130260, 100947494, 106260520, 201894988, 252368735, 403789976, 504737470, 1009474940, 2018949880]

約数ペア:

[(1, 2018949880), (2, 1009474940), (4, 504737470), (5, 403789976), (8, 252368735), (10, 201894988), (19, 106260520), (20, 100947494), (38, 53130260), (40, 50473747), (41, 49242680), (76, 26565130), (82, 24621340), (95, 21252104), (152, 13282565), (164, 12310670), (190, 10626052), (205, 9848536), (328, 6155335), (380, 5313026), (410, 4924268), (760, 2656513), (779, 2591720), (820, 2462134), (1558, 1295860), (1640, 1231067), (3116, 647930), (3895, 518344), (6232, 323965), (7790, 259172), (15580, 129586), (31160, 64793)]