20789460

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{313}}^1$

素因数の和:375

約数の個数: 120

約数和(自身を含む): 67021416

約数和(自身を除く): 46231956

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 41, 45, 54, 60, 81, 82, 90, 108, 123, 135, 162, 164, 180, 205, 246, 270, 313, 324, 369, 405, 410, 492, 540, 615, 626, 738, 810, 820, 939, 1107, 1230, 1252, 1476, 1565, 1620, 1845, 1878, 2214, 2460, 2817, 3130, 3321, 3690, 3756, 4428, 4695, 5535, 5634, 6260, 6642, 7380, 8451, 9390, 11070, 11268, 12833, 13284, 14085, 16605, 16902, 18780, 22140, 25353, 25666, 28170, 33210, 33804, 38499, 42255, 50706, 51332, 56340, 64165, 66420, 76998, 84510, 101412, 115497, 126765, 128330, 153996, 169020, 192495, 230994, 253530, 256660, 346491, 384990, 461988, 507060, 577485, 692982, 769980, 1039473, 1154970, 1385964, 1732455, 2078946, 2309940, 3464910, 4157892, 5197365, 6929820, 10394730, 20789460]

約数ペア:

[(1, 20789460), (2, 10394730), (3, 6929820), (4, 5197365), (5, 4157892), (6, 3464910), (9, 2309940), (10, 2078946), (12, 1732455), (15, 1385964), (18, 1154970), (20, 1039473), (27, 769980), (30, 692982), (36, 577485), (41, 507060), (45, 461988), (54, 384990), (60, 346491), (81, 256660), (82, 253530), (90, 230994), (108, 192495), (123, 169020), (135, 153996), (162, 128330), (164, 126765), (180, 115497), (205, 101412), (246, 84510), (270, 76998), (313, 66420), (324, 64165), (369, 56340), (405, 51332), (410, 50706), (492, 42255), (540, 38499), (615, 33804), (626, 33210), (738, 28170), (810, 25666), (820, 25353), (939, 22140), (1107, 18780), (1230, 16902), (1252, 16605), (1476, 14085), (1565, 13284), (1620, 12833), (1845, 11268), (1878, 11070), (2214, 9390), (2460, 8451), (2817, 7380), (3130, 6642), (3321, 6260), (3690, 5634), (3756, 5535), (4428, 4695)]