1621694320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{389}}^1$

素因数の和:515

約数の個数: 120

約数和(自身を含む): 3999565440

約数和(自身を除く): 2377871120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 205, 248, 310, 328, 389, 410, 496, 620, 656, 778, 820, 1240, 1271, 1556, 1640, 1681, 1945, 2480, 2542, 3112, 3280, 3362, 3890, 5084, 6224, 6355, 6724, 7780, 8405, 10168, 12059, 12710, 13448, 15560, 15949, 16810, 20336, 24118, 25420, 26896, 31120, 31898, 33620, 48236, 50840, 52111, 60295, 63796, 67240, 79745, 96472, 101680, 104222, 120590, 127592, 134480, 159490, 192944, 208444, 241180, 255184, 260555, 318980, 416888, 482360, 494419, 521110, 637960, 653909, 833776, 964720, 988838, 1042220, 1275920, 1307818, 1977676, 2084440, 2472095, 2615636, 3269545, 3955352, 4168880, 4944190, 5231272, 6539090, 7910704, 9888380, 10462544, 13078180, 19776760, 20271179, 26156360, 39553520, 40542358, 52312720, 81084716, 101355895, 162169432, 202711790, 324338864, 405423580, 810847160, 1621694320]

約数ペア:

[(1, 1621694320), (2, 810847160), (4, 405423580), (5, 324338864), (8, 202711790), (10, 162169432), (16, 101355895), (20, 81084716), (31, 52312720), (40, 40542358), (41, 39553520), (62, 26156360), (80, 20271179), (82, 19776760), (124, 13078180), (155, 10462544), (164, 9888380), (205, 7910704), (248, 6539090), (310, 5231272), (328, 4944190), (389, 4168880), (410, 3955352), (496, 3269545), (620, 2615636), (656, 2472095), (778, 2084440), (820, 1977676), (1240, 1307818), (1271, 1275920), (1556, 1042220), (1640, 988838), (1681, 964720), (1945, 833776), (2480, 653909), (2542, 637960), (3112, 521110), (3280, 494419), (3362, 482360), (3890, 416888), (5084, 318980), (6224, 260555), (6355, 255184), (6724, 241180), (7780, 208444), (8405, 192944), (10168, 159490), (12059, 134480), (12710, 127592), (13448, 120590), (15560, 104222), (15949, 101680), (16810, 96472), (20336, 79745), (24118, 67240), (25420, 63796), (26896, 60295), (31120, 52111), (31898, 50840), (33620, 48236)]