218842640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1117}}^1$

素因数の和:1240

約数の個数: 80

約数和(自身を含む): 532346880

約数和(自身を除く): 313504240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 79, 80, 124, 155, 158, 248, 310, 316, 395, 496, 620, 632, 790, 1117, 1240, 1264, 1580, 2234, 2449, 2480, 3160, 4468, 4898, 5585, 6320, 8936, 9796, 11170, 12245, 17872, 19592, 22340, 24490, 34627, 39184, 44680, 48980, 69254, 88243, 89360, 97960, 138508, 173135, 176486, 195920, 277016, 346270, 352972, 441215, 554032, 692540, 705944, 882430, 1385080, 1411888, 1764860, 2735533, 2770160, 3529720, 5471066, 7059440, 10942132, 13677665, 21884264, 27355330, 43768528, 54710660, 109421320, 218842640]

約数ペア:

[(1, 218842640), (2, 109421320), (4, 54710660), (5, 43768528), (8, 27355330), (10, 21884264), (16, 13677665), (20, 10942132), (31, 7059440), (40, 5471066), (62, 3529720), (79, 2770160), (80, 2735533), (124, 1764860), (155, 1411888), (158, 1385080), (248, 882430), (310, 705944), (316, 692540), (395, 554032), (496, 441215), (620, 352972), (632, 346270), (790, 277016), (1117, 195920), (1240, 176486), (1264, 173135), (1580, 138508), (2234, 97960), (2449, 89360), (2480, 88243), (3160, 69254), (4468, 48980), (4898, 44680), (5585, 39184), (6320, 34627), (8936, 24490), (9796, 22340), (11170, 19592), (12245, 17872)]