21655360

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:144

約数の個数: 112

約数和(自身を含む): 55595520

約数和(自身を除く): 33940160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 37, 40, 59, 62, 64, 74, 80, 118, 124, 148, 155, 160, 185, 236, 248, 295, 296, 310, 320, 370, 472, 496, 590, 592, 620, 740, 944, 992, 1147, 1180, 1184, 1240, 1480, 1829, 1888, 1984, 2183, 2294, 2360, 2368, 2480, 2960, 3658, 3776, 4366, 4588, 4720, 4960, 5735, 5920, 7316, 8732, 9145, 9176, 9440, 9920, 10915, 11470, 11840, 14632, 17464, 18290, 18352, 18880, 21830, 22940, 29264, 34928, 36580, 36704, 43660, 45880, 58528, 67673, 69856, 73160, 73408, 87320, 91760, 117056, 135346, 139712, 146320, 174640, 183520, 270692, 292640, 338365, 349280, 367040, 541384, 585280, 676730, 698560, 1082768, 1353460, 2165536, 2706920, 4331072, 5413840, 10827680, 21655360]

約数ペア:

[(1, 21655360), (2, 10827680), (4, 5413840), (5, 4331072), (8, 2706920), (10, 2165536), (16, 1353460), (20, 1082768), (31, 698560), (32, 676730), (37, 585280), (40, 541384), (59, 367040), (62, 349280), (64, 338365), (74, 292640), (80, 270692), (118, 183520), (124, 174640), (148, 146320), (155, 139712), (160, 135346), (185, 117056), (236, 91760), (248, 87320), (295, 73408), (296, 73160), (310, 69856), (320, 67673), (370, 58528), (472, 45880), (496, 43660), (590, 36704), (592, 36580), (620, 34928), (740, 29264), (944, 22940), (992, 21830), (1147, 18880), (1180, 18352), (1184, 18290), (1240, 17464), (1480, 14632), (1829, 11840), (1888, 11470), (1984, 10915), (2183, 9920), (2294, 9440), (2360, 9176), (2368, 9145), (2480, 8732), (2960, 7316), (3658, 5920), (3776, 5735), (4366, 4960), (4588, 4720)]