21288320

素因数分解:

$2^7\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:116

約数の個数: 128

約数和(自身を含む): 55814400

約数和(自身を除く): 34526080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 32, 37, 40, 58, 62, 64, 74, 80, 116, 124, 128, 145, 148, 155, 160, 185, 232, 248, 290, 296, 310, 320, 370, 464, 496, 580, 592, 620, 640, 740, 899, 928, 992, 1073, 1147, 1160, 1184, 1240, 1480, 1798, 1856, 1984, 2146, 2294, 2320, 2368, 2480, 2960, 3596, 3712, 3968, 4292, 4495, 4588, 4640, 4736, 4960, 5365, 5735, 5920, 7192, 8584, 8990, 9176, 9280, 9920, 10730, 11470, 11840, 14384, 17168, 17980, 18352, 18560, 19840, 21460, 22940, 23680, 28768, 33263, 34336, 35960, 36704, 42920, 45880, 57536, 66526, 68672, 71920, 73408, 85840, 91760, 115072, 133052, 137344, 143840, 146816, 166315, 171680, 183520, 266104, 287680, 332630, 343360, 367040, 532208, 575360, 665260, 686720, 734080, 1064416, 1330520, 2128832, 2661040, 4257664, 5322080, 10644160, 21288320]

約数ペア:

[(1, 21288320), (2, 10644160), (4, 5322080), (5, 4257664), (8, 2661040), (10, 2128832), (16, 1330520), (20, 1064416), (29, 734080), (31, 686720), (32, 665260), (37, 575360), (40, 532208), (58, 367040), (62, 343360), (64, 332630), (74, 287680), (80, 266104), (116, 183520), (124, 171680), (128, 166315), (145, 146816), (148, 143840), (155, 137344), (160, 133052), (185, 115072), (232, 91760), (248, 85840), (290, 73408), (296, 71920), (310, 68672), (320, 66526), (370, 57536), (464, 45880), (496, 42920), (580, 36704), (592, 35960), (620, 34336), (640, 33263), (740, 28768), (899, 23680), (928, 22940), (992, 21460), (1073, 19840), (1147, 18560), (1160, 18352), (1184, 17980), (1240, 17168), (1480, 14384), (1798, 11840), (1856, 11470), (1984, 10730), (2146, 9920), (2294, 9280), (2320, 9176), (2368, 8990), (2480, 8584), (2960, 7192), (3596, 5920), (3712, 5735), (3968, 5365), (4292, 4960), (4495, 4736), (4588, 4640)]