21556160

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:142

約数の個数: 112

約数和(自身を含む): 55302912

約数和(自身を除く): 33746752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 41, 53, 62, 64, 80, 82, 106, 124, 155, 160, 164, 205, 212, 248, 265, 310, 320, 328, 410, 424, 496, 530, 620, 656, 820, 848, 992, 1060, 1240, 1271, 1312, 1640, 1643, 1696, 1984, 2120, 2173, 2480, 2542, 2624, 3280, 3286, 3392, 4240, 4346, 4960, 5084, 6355, 6560, 6572, 8215, 8480, 8692, 9920, 10168, 10865, 12710, 13120, 13144, 16430, 16960, 17384, 20336, 21730, 25420, 26288, 32860, 34768, 40672, 43460, 50840, 52576, 65720, 67363, 69536, 81344, 86920, 101680, 105152, 131440, 134726, 139072, 173840, 203360, 262880, 269452, 336815, 347680, 406720, 525760, 538904, 673630, 695360, 1077808, 1347260, 2155616, 2694520, 4311232, 5389040, 10778080, 21556160]

約数ペア:

[(1, 21556160), (2, 10778080), (4, 5389040), (5, 4311232), (8, 2694520), (10, 2155616), (16, 1347260), (20, 1077808), (31, 695360), (32, 673630), (40, 538904), (41, 525760), (53, 406720), (62, 347680), (64, 336815), (80, 269452), (82, 262880), (106, 203360), (124, 173840), (155, 139072), (160, 134726), (164, 131440), (205, 105152), (212, 101680), (248, 86920), (265, 81344), (310, 69536), (320, 67363), (328, 65720), (410, 52576), (424, 50840), (496, 43460), (530, 40672), (620, 34768), (656, 32860), (820, 26288), (848, 25420), (992, 21730), (1060, 20336), (1240, 17384), (1271, 16960), (1312, 16430), (1640, 13144), (1643, 13120), (1696, 12710), (1984, 10865), (2120, 10168), (2173, 9920), (2480, 8692), (2542, 8480), (2624, 8215), (3280, 6572), (3286, 6560), (3392, 6355), (4240, 5084), (4346, 4960)]