257667660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{757}}^1$

素因数の和:864

約数の個数: 144

約数和(自身を含む): 821114112

約数和(自身を除く): 563446452

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 61, 62, 90, 93, 122, 124, 155, 180, 183, 186, 244, 279, 305, 310, 366, 372, 465, 549, 558, 610, 620, 732, 757, 915, 930, 1098, 1116, 1220, 1395, 1514, 1830, 1860, 1891, 2196, 2271, 2745, 2790, 3028, 3660, 3782, 3785, 4542, 5490, 5580, 5673, 6813, 7564, 7570, 9084, 9455, 10980, 11346, 11355, 13626, 15140, 17019, 18910, 22692, 22710, 23467, 27252, 28365, 34038, 34065, 37820, 45420, 46177, 46934, 56730, 68076, 68130, 70401, 85095, 92354, 93868, 113460, 117335, 136260, 138531, 140802, 170190, 184708, 211203, 230885, 234670, 277062, 281604, 340380, 352005, 415593, 422406, 461770, 469340, 554124, 692655, 704010, 831186, 844812, 923540, 1056015, 1385310, 1408020, 1431487, 1662372, 2077965, 2112030, 2770620, 2862974, 4155930, 4224060, 4294461, 5725948, 7157435, 8311860, 8588922, 12883383, 14314870, 17177844, 21472305, 25766766, 28629740, 42944610, 51533532, 64416915, 85889220, 128833830, 257667660]

約数ペア:

[(1, 257667660), (2, 128833830), (3, 85889220), (4, 64416915), (5, 51533532), (6, 42944610), (9, 28629740), (10, 25766766), (12, 21472305), (15, 17177844), (18, 14314870), (20, 12883383), (30, 8588922), (31, 8311860), (36, 7157435), (45, 5725948), (60, 4294461), (61, 4224060), (62, 4155930), (90, 2862974), (93, 2770620), (122, 2112030), (124, 2077965), (155, 1662372), (180, 1431487), (183, 1408020), (186, 1385310), (244, 1056015), (279, 923540), (305, 844812), (310, 831186), (366, 704010), (372, 692655), (465, 554124), (549, 469340), (558, 461770), (610, 422406), (620, 415593), (732, 352005), (757, 340380), (915, 281604), (930, 277062), (1098, 234670), (1116, 230885), (1220, 211203), (1395, 184708), (1514, 170190), (1830, 140802), (1860, 138531), (1891, 136260), (2196, 117335), (2271, 113460), (2745, 93868), (2790, 92354), (3028, 85095), (3660, 70401), (3782, 68130), (3785, 68076), (4542, 56730), (5490, 46934), (5580, 46177), (5673, 45420), (6813, 37820), (7564, 34065), (7570, 34038), (9084, 28365), (9455, 27252), (10980, 23467), (11346, 22710), (11355, 22692), (13626, 18910), (15140, 17019)]