18828160

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:136

約数の個数: 128

約数和(自身を含む): 50722560

約数和(自身を除く): 31894400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 73, 80, 104, 124, 128, 130, 146, 155, 160, 208, 248, 260, 292, 310, 320, 365, 403, 416, 496, 520, 584, 620, 640, 730, 806, 832, 949, 992, 1040, 1168, 1240, 1460, 1612, 1664, 1898, 1984, 2015, 2080, 2263, 2336, 2480, 2920, 3224, 3796, 3968, 4030, 4160, 4526, 4672, 4745, 4960, 5840, 6448, 7592, 8060, 8320, 9052, 9344, 9490, 9920, 11315, 11680, 12896, 15184, 16120, 18104, 18980, 19840, 22630, 23360, 25792, 29419, 30368, 32240, 36208, 37960, 45260, 46720, 51584, 58838, 60736, 64480, 72416, 75920, 90520, 117676, 121472, 128960, 144832, 147095, 151840, 181040, 235352, 257920, 289664, 294190, 303680, 362080, 470704, 588380, 607360, 724160, 941408, 1176760, 1448320, 1882816, 2353520, 3765632, 4707040, 9414080, 18828160]

約数ペア:

[(1, 18828160), (2, 9414080), (4, 4707040), (5, 3765632), (8, 2353520), (10, 1882816), (13, 1448320), (16, 1176760), (20, 941408), (26, 724160), (31, 607360), (32, 588380), (40, 470704), (52, 362080), (62, 303680), (64, 294190), (65, 289664), (73, 257920), (80, 235352), (104, 181040), (124, 151840), (128, 147095), (130, 144832), (146, 128960), (155, 121472), (160, 117676), (208, 90520), (248, 75920), (260, 72416), (292, 64480), (310, 60736), (320, 58838), (365, 51584), (403, 46720), (416, 45260), (496, 37960), (520, 36208), (584, 32240), (620, 30368), (640, 29419), (730, 25792), (806, 23360), (832, 22630), (949, 19840), (992, 18980), (1040, 18104), (1168, 16120), (1240, 15184), (1460, 12896), (1612, 11680), (1664, 11315), (1898, 9920), (1984, 9490), (2015, 9344), (2080, 9052), (2263, 8320), (2336, 8060), (2480, 7592), (2920, 6448), (3224, 5840), (3796, 4960), (3968, 4745), (4030, 4672), (4160, 4526)]