221568160

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{131}}^1$

素因数の和:219

約数の個数: 144

約数和(自身を含む): 594560736

約数和(自身を除く): 372992576

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 80, 88, 110, 124, 131, 155, 160, 176, 220, 248, 262, 310, 341, 352, 440, 496, 524, 620, 655, 682, 880, 961, 992, 1048, 1240, 1310, 1364, 1441, 1705, 1760, 1922, 2096, 2480, 2620, 2728, 2882, 3410, 3844, 4061, 4192, 4805, 4960, 5240, 5456, 5764, 6820, 7205, 7688, 8122, 9610, 10480, 10571, 10912, 11528, 13640, 14410, 15376, 16244, 19220, 20305, 20960, 21142, 23056, 27280, 28820, 30752, 32488, 38440, 40610, 42284, 44671, 46112, 52855, 54560, 57640, 64976, 76880, 81220, 84568, 89342, 105710, 115280, 125891, 129952, 153760, 162440, 169136, 178684, 211420, 223355, 230560, 251782, 324880, 338272, 357368, 422840, 446710, 503564, 629455, 649760, 714736, 845680, 893420, 1007128, 1258910, 1384801, 1429472, 1691360, 1786840, 2014256, 2517820, 2769602, 3573680, 4028512, 5035640, 5539204, 6924005, 7147360, 10071280, 11078408, 13848010, 20142560, 22156816, 27696020, 44313632, 55392040, 110784080, 221568160]

約数ペア:

[(1, 221568160), (2, 110784080), (4, 55392040), (5, 44313632), (8, 27696020), (10, 22156816), (11, 20142560), (16, 13848010), (20, 11078408), (22, 10071280), (31, 7147360), (32, 6924005), (40, 5539204), (44, 5035640), (55, 4028512), (62, 3573680), (80, 2769602), (88, 2517820), (110, 2014256), (124, 1786840), (131, 1691360), (155, 1429472), (160, 1384801), (176, 1258910), (220, 1007128), (248, 893420), (262, 845680), (310, 714736), (341, 649760), (352, 629455), (440, 503564), (496, 446710), (524, 422840), (620, 357368), (655, 338272), (682, 324880), (880, 251782), (961, 230560), (992, 223355), (1048, 211420), (1240, 178684), (1310, 169136), (1364, 162440), (1441, 153760), (1705, 129952), (1760, 125891), (1922, 115280), (2096, 105710), (2480, 89342), (2620, 84568), (2728, 81220), (2882, 76880), (3410, 64976), (3844, 57640), (4061, 54560), (4192, 52855), (4805, 46112), (4960, 44671), (5240, 42284), (5456, 40610), (5764, 38440), (6820, 32488), (7205, 30752), (7688, 28820), (8122, 27280), (9610, 23056), (10480, 21142), (10571, 20960), (10912, 20305), (11528, 19220), (13640, 16244), (14410, 15376)]