21033480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:263

約数の個数: 128

約数和(自身を含む): 69148800

約数和(自身を除く): 48115320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 97, 104, 120, 130, 139, 156, 194, 195, 260, 278, 291, 312, 388, 390, 417, 485, 520, 556, 582, 695, 776, 780, 834, 970, 1112, 1164, 1261, 1390, 1455, 1560, 1668, 1807, 1940, 2085, 2328, 2522, 2780, 2910, 3336, 3614, 3783, 3880, 4170, 5044, 5421, 5560, 5820, 6305, 7228, 7566, 8340, 9035, 10088, 10842, 11640, 12610, 13483, 14456, 15132, 16680, 18070, 18915, 21684, 25220, 26966, 27105, 30264, 36140, 37830, 40449, 43368, 50440, 53932, 54210, 67415, 72280, 75660, 80898, 107864, 108420, 134830, 151320, 161796, 175279, 202245, 216840, 269660, 323592, 350558, 404490, 525837, 539320, 701116, 808980, 876395, 1051674, 1402232, 1617960, 1752790, 2103348, 2629185, 3505580, 4206696, 5258370, 7011160, 10516740, 21033480]

約数ペア:

[(1, 21033480), (2, 10516740), (3, 7011160), (4, 5258370), (5, 4206696), (6, 3505580), (8, 2629185), (10, 2103348), (12, 1752790), (13, 1617960), (15, 1402232), (20, 1051674), (24, 876395), (26, 808980), (30, 701116), (39, 539320), (40, 525837), (52, 404490), (60, 350558), (65, 323592), (78, 269660), (97, 216840), (104, 202245), (120, 175279), (130, 161796), (139, 151320), (156, 134830), (194, 108420), (195, 107864), (260, 80898), (278, 75660), (291, 72280), (312, 67415), (388, 54210), (390, 53932), (417, 50440), (485, 43368), (520, 40449), (556, 37830), (582, 36140), (695, 30264), (776, 27105), (780, 26966), (834, 25220), (970, 21684), (1112, 18915), (1164, 18070), (1261, 16680), (1390, 15132), (1455, 14456), (1560, 13483), (1668, 12610), (1807, 11640), (1940, 10842), (2085, 10088), (2328, 9035), (2522, 8340), (2780, 7566), (2910, 7228), (3336, 6305), (3614, 5820), (3783, 5560), (3880, 5421), (4170, 5044)]