21527440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1439}}^1$

素因数の和:1480

約数の個数: 80

約数和(自身を含む): 57853440

約数和(自身を除く): 36326000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 34, 40, 44, 55, 68, 80, 85, 88, 110, 136, 170, 176, 187, 220, 272, 340, 374, 440, 680, 748, 880, 935, 1360, 1439, 1496, 1870, 2878, 2992, 3740, 5756, 7195, 7480, 11512, 14390, 14960, 15829, 23024, 24463, 28780, 31658, 48926, 57560, 63316, 79145, 97852, 115120, 122315, 126632, 158290, 195704, 244630, 253264, 269093, 316580, 391408, 489260, 538186, 633160, 978520, 1076372, 1266320, 1345465, 1957040, 2152744, 2690930, 4305488, 5381860, 10763720, 21527440]

約数ペア:

[(1, 21527440), (2, 10763720), (4, 5381860), (5, 4305488), (8, 2690930), (10, 2152744), (11, 1957040), (16, 1345465), (17, 1266320), (20, 1076372), (22, 978520), (34, 633160), (40, 538186), (44, 489260), (55, 391408), (68, 316580), (80, 269093), (85, 253264), (88, 244630), (110, 195704), (136, 158290), (170, 126632), (176, 122315), (187, 115120), (220, 97852), (272, 79145), (340, 63316), (374, 57560), (440, 48926), (680, 31658), (748, 28780), (880, 24463), (935, 23024), (1360, 15829), (1439, 14960), (1496, 14390), (1870, 11512), (2878, 7480), (2992, 7195), (3740, 5756)]