20767520

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:178

約数の個数: 96

約数和(自身を含む): 52254720

約数和(自身を除く): 31487200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 53, 62, 79, 80, 106, 124, 155, 158, 160, 212, 248, 265, 310, 316, 395, 424, 496, 530, 620, 632, 790, 848, 992, 1060, 1240, 1264, 1580, 1643, 1696, 2120, 2449, 2480, 2528, 3160, 3286, 4187, 4240, 4898, 4960, 6320, 6572, 8215, 8374, 8480, 9796, 12245, 12640, 13144, 16430, 16748, 19592, 20935, 24490, 26288, 32860, 33496, 39184, 41870, 48980, 52576, 65720, 66992, 78368, 83740, 97960, 129797, 131440, 133984, 167480, 195920, 259594, 262880, 334960, 391840, 519188, 648985, 669920, 1038376, 1297970, 2076752, 2595940, 4153504, 5191880, 10383760, 20767520]

約数ペア:

[(1, 20767520), (2, 10383760), (4, 5191880), (5, 4153504), (8, 2595940), (10, 2076752), (16, 1297970), (20, 1038376), (31, 669920), (32, 648985), (40, 519188), (53, 391840), (62, 334960), (79, 262880), (80, 259594), (106, 195920), (124, 167480), (155, 133984), (158, 131440), (160, 129797), (212, 97960), (248, 83740), (265, 78368), (310, 66992), (316, 65720), (395, 52576), (424, 48980), (496, 41870), (530, 39184), (620, 33496), (632, 32860), (790, 26288), (848, 24490), (992, 20935), (1060, 19592), (1240, 16748), (1264, 16430), (1580, 13144), (1643, 12640), (1696, 12245), (2120, 9796), (2449, 8480), (2480, 8374), (2528, 8215), (3160, 6572), (3286, 6320), (4187, 4960), (4240, 4898)]