21404260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:161

約数の個数: 96

約数和(自身を含む): 51609600

約数和(自身を除く): 30205340

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 31, 38, 46, 62, 76, 79, 92, 95, 115, 124, 155, 158, 190, 230, 310, 316, 380, 395, 437, 460, 589, 620, 713, 790, 874, 1178, 1426, 1501, 1580, 1748, 1817, 2185, 2356, 2449, 2852, 2945, 3002, 3565, 3634, 4370, 4898, 5890, 6004, 7130, 7268, 7505, 8740, 9085, 9796, 11780, 12245, 13547, 14260, 15010, 18170, 24490, 27094, 30020, 34523, 36340, 46531, 48980, 54188, 56327, 67735, 69046, 93062, 112654, 135470, 138092, 172615, 186124, 225308, 232655, 270940, 281635, 345230, 465310, 563270, 690460, 930620, 1070213, 1126540, 2140426, 4280852, 5351065, 10702130, 21404260]

約数ペア:

[(1, 21404260), (2, 10702130), (4, 5351065), (5, 4280852), (10, 2140426), (19, 1126540), (20, 1070213), (23, 930620), (31, 690460), (38, 563270), (46, 465310), (62, 345230), (76, 281635), (79, 270940), (92, 232655), (95, 225308), (115, 186124), (124, 172615), (155, 138092), (158, 135470), (190, 112654), (230, 93062), (310, 69046), (316, 67735), (380, 56327), (395, 54188), (437, 48980), (460, 46531), (589, 36340), (620, 34523), (713, 30020), (790, 27094), (874, 24490), (1178, 18170), (1426, 15010), (1501, 14260), (1580, 13547), (1748, 12245), (1817, 11780), (2185, 9796), (2356, 9085), (2449, 8740), (2852, 7505), (2945, 7268), (3002, 7130), (3565, 6004), (3634, 5890), (4370, 4898)]