280528020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{881}}^1$

素因数の和:986

約数の個数: 144

約数和(自身を含む): 895723920

約数和(自身を除く): 615195900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 61, 87, 90, 116, 122, 145, 174, 180, 183, 244, 261, 290, 305, 348, 366, 435, 522, 549, 580, 610, 732, 870, 881, 915, 1044, 1098, 1220, 1305, 1740, 1762, 1769, 1830, 2196, 2610, 2643, 2745, 3524, 3538, 3660, 4405, 5220, 5286, 5307, 5490, 7076, 7929, 8810, 8845, 10572, 10614, 10980, 13215, 15858, 15921, 17620, 17690, 21228, 25549, 26430, 26535, 31716, 31842, 35380, 39645, 51098, 52860, 53070, 53741, 63684, 76647, 79290, 79605, 102196, 106140, 107482, 127745, 153294, 158580, 159210, 161223, 214964, 229941, 255490, 268705, 306588, 318420, 322446, 383235, 459882, 483669, 510980, 537410, 644892, 766470, 806115, 919764, 967338, 1074820, 1149705, 1532940, 1558489, 1612230, 1934676, 2299410, 2418345, 3116978, 3224460, 4598820, 4675467, 4836690, 6233956, 7792445, 9350934, 9673380, 14026401, 15584890, 18701868, 23377335, 28052802, 31169780, 46754670, 56105604, 70132005, 93509340, 140264010, 280528020]

約数ペア:

[(1, 280528020), (2, 140264010), (3, 93509340), (4, 70132005), (5, 56105604), (6, 46754670), (9, 31169780), (10, 28052802), (12, 23377335), (15, 18701868), (18, 15584890), (20, 14026401), (29, 9673380), (30, 9350934), (36, 7792445), (45, 6233956), (58, 4836690), (60, 4675467), (61, 4598820), (87, 3224460), (90, 3116978), (116, 2418345), (122, 2299410), (145, 1934676), (174, 1612230), (180, 1558489), (183, 1532940), (244, 1149705), (261, 1074820), (290, 967338), (305, 919764), (348, 806115), (366, 766470), (435, 644892), (522, 537410), (549, 510980), (580, 483669), (610, 459882), (732, 383235), (870, 322446), (881, 318420), (915, 306588), (1044, 268705), (1098, 255490), (1220, 229941), (1305, 214964), (1740, 161223), (1762, 159210), (1769, 158580), (1830, 153294), (2196, 127745), (2610, 107482), (2643, 106140), (2745, 102196), (3524, 79605), (3538, 79290), (3660, 76647), (4405, 63684), (5220, 53741), (5286, 53070), (5307, 52860), (5490, 51098), (7076, 39645), (7929, 35380), (8810, 31842), (8845, 31716), (10572, 26535), (10614, 26430), (10980, 25549), (13215, 21228), (15858, 17690), (15921, 17620)]