258729720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{443}}^1$

素因数の和:645

約数の個数: 128

約数和(自身を含む): 808151040

約数和(自身を除く): 549421320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 157, 186, 248, 310, 314, 372, 443, 465, 471, 620, 628, 744, 785, 886, 930, 942, 1240, 1256, 1329, 1570, 1772, 1860, 1884, 2215, 2355, 2658, 3140, 3544, 3720, 3768, 4430, 4710, 4867, 5316, 6280, 6645, 8860, 9420, 9734, 10632, 13290, 13733, 14601, 17720, 18840, 19468, 24335, 26580, 27466, 29202, 38936, 41199, 48670, 53160, 54932, 58404, 68665, 69551, 73005, 82398, 97340, 109864, 116808, 137330, 139102, 146010, 164796, 194680, 205995, 208653, 274660, 278204, 292020, 329592, 347755, 411990, 417306, 549320, 556408, 584040, 695510, 823980, 834612, 1043265, 1391020, 1647960, 1669224, 2086530, 2156081, 2782040, 4173060, 4312162, 6468243, 8346120, 8624324, 10780405, 12936486, 17248648, 21560810, 25872972, 32341215, 43121620, 51745944, 64682430, 86243240, 129364860, 258729720]

約数ペア:

[(1, 258729720), (2, 129364860), (3, 86243240), (4, 64682430), (5, 51745944), (6, 43121620), (8, 32341215), (10, 25872972), (12, 21560810), (15, 17248648), (20, 12936486), (24, 10780405), (30, 8624324), (31, 8346120), (40, 6468243), (60, 4312162), (62, 4173060), (93, 2782040), (120, 2156081), (124, 2086530), (155, 1669224), (157, 1647960), (186, 1391020), (248, 1043265), (310, 834612), (314, 823980), (372, 695510), (443, 584040), (465, 556408), (471, 549320), (620, 417306), (628, 411990), (744, 347755), (785, 329592), (886, 292020), (930, 278204), (942, 274660), (1240, 208653), (1256, 205995), (1329, 194680), (1570, 164796), (1772, 146010), (1860, 139102), (1884, 137330), (2215, 116808), (2355, 109864), (2658, 97340), (3140, 82398), (3544, 73005), (3720, 69551), (3768, 68665), (4430, 58404), (4710, 54932), (4867, 53160), (5316, 48670), (6280, 41199), (6645, 38936), (8860, 29202), (9420, 27466), (9734, 26580), (10632, 24335), (13290, 19468), (13733, 18840), (14601, 17720)]