680204920

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1\times {\mathrm{971}}^1$

素因数の和:1276

約数の個数: 64

約数和(自身を含む): 1557843840

約数和(自身を除く): 877638920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 211, 332, 415, 422, 664, 830, 844, 971, 1055, 1660, 1688, 1942, 2110, 3320, 3884, 4220, 4855, 7768, 8440, 9710, 17513, 19420, 35026, 38840, 70052, 80593, 87565, 140104, 161186, 175130, 204881, 322372, 350260, 402965, 409762, 644744, 700520, 805930, 819524, 1024405, 1611860, 1639048, 2048810, 3223720, 4097620, 8195240, 17005123, 34010246, 68020492, 85025615, 136040984, 170051230, 340102460, 680204920]

約数ペア:

[(1, 680204920), (2, 340102460), (4, 170051230), (5, 136040984), (8, 85025615), (10, 68020492), (20, 34010246), (40, 17005123), (83, 8195240), (166, 4097620), (211, 3223720), (332, 2048810), (415, 1639048), (422, 1611860), (664, 1024405), (830, 819524), (844, 805930), (971, 700520), (1055, 644744), (1660, 409762), (1688, 402965), (1942, 350260), (2110, 322372), (3320, 204881), (3884, 175130), (4220, 161186), (4855, 140104), (7768, 87565), (8440, 80593), (9710, 70052), (17513, 38840), (19420, 35026)]