261184920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{1151}}^1$

素因数の和:1257

約数の個数: 128

約数和(自身を含む): 822804480

約数和(自身を除く): 561619560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 61, 62, 93, 120, 122, 124, 155, 183, 186, 244, 248, 305, 310, 366, 372, 465, 488, 610, 620, 732, 744, 915, 930, 1151, 1220, 1240, 1464, 1830, 1860, 1891, 2302, 2440, 3453, 3660, 3720, 3782, 4604, 5673, 5755, 6906, 7320, 7564, 9208, 9455, 11346, 11510, 13812, 15128, 17265, 18910, 22692, 23020, 27624, 28365, 34530, 35681, 37820, 45384, 46040, 56730, 69060, 70211, 71362, 75640, 107043, 113460, 138120, 140422, 142724, 178405, 210633, 214086, 226920, 280844, 285448, 351055, 356810, 421266, 428172, 535215, 561688, 702110, 713620, 842532, 856344, 1053165, 1070430, 1404220, 1427240, 1685064, 2106330, 2140860, 2176541, 2808440, 4212660, 4281720, 4353082, 6529623, 8425320, 8706164, 10882705, 13059246, 17412328, 21765410, 26118492, 32648115, 43530820, 52236984, 65296230, 87061640, 130592460, 261184920]

約数ペア:

[(1, 261184920), (2, 130592460), (3, 87061640), (4, 65296230), (5, 52236984), (6, 43530820), (8, 32648115), (10, 26118492), (12, 21765410), (15, 17412328), (20, 13059246), (24, 10882705), (30, 8706164), (31, 8425320), (40, 6529623), (60, 4353082), (61, 4281720), (62, 4212660), (93, 2808440), (120, 2176541), (122, 2140860), (124, 2106330), (155, 1685064), (183, 1427240), (186, 1404220), (244, 1070430), (248, 1053165), (305, 856344), (310, 842532), (366, 713620), (372, 702110), (465, 561688), (488, 535215), (610, 428172), (620, 421266), (732, 356810), (744, 351055), (915, 285448), (930, 280844), (1151, 226920), (1220, 214086), (1240, 210633), (1464, 178405), (1830, 142724), (1860, 140422), (1891, 138120), (2302, 113460), (2440, 107043), (3453, 75640), (3660, 71362), (3720, 70211), (3782, 69060), (4604, 56730), (5673, 46040), (5755, 45384), (6906, 37820), (7320, 35681), (7564, 34530), (9208, 28365), (9455, 27624), (11346, 23020), (11510, 22692), (13812, 18910), (15128, 17265)]