31478440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 87494400

約数和(自身を除く): 56015960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 61, 70, 76, 95, 97, 122, 133, 140, 152, 190, 194, 244, 266, 280, 305, 380, 388, 427, 485, 488, 532, 610, 665, 679, 760, 776, 854, 970, 1064, 1159, 1220, 1330, 1358, 1708, 1843, 1940, 2135, 2318, 2440, 2660, 2716, 3395, 3416, 3686, 3880, 4270, 4636, 5320, 5432, 5795, 5917, 6790, 7372, 8113, 8540, 9215, 9272, 11590, 11834, 12901, 13580, 14744, 16226, 17080, 18430, 23180, 23668, 25802, 27160, 29585, 32452, 36860, 40565, 41419, 46360, 47336, 51604, 59170, 64505, 64904, 73720, 81130, 82838, 103208, 112423, 118340, 129010, 162260, 165676, 207095, 224846, 236680, 258020, 324520, 331352, 414190, 449692, 516040, 562115, 786961, 828380, 899384, 1124230, 1573922, 1656760, 2248460, 3147844, 3934805, 4496920, 6295688, 7869610, 15739220, 31478440]

約数ペア:

[(1, 31478440), (2, 15739220), (4, 7869610), (5, 6295688), (7, 4496920), (8, 3934805), (10, 3147844), (14, 2248460), (19, 1656760), (20, 1573922), (28, 1124230), (35, 899384), (38, 828380), (40, 786961), (56, 562115), (61, 516040), (70, 449692), (76, 414190), (95, 331352), (97, 324520), (122, 258020), (133, 236680), (140, 224846), (152, 207095), (190, 165676), (194, 162260), (244, 129010), (266, 118340), (280, 112423), (305, 103208), (380, 82838), (388, 81130), (427, 73720), (485, 64904), (488, 64505), (532, 59170), (610, 51604), (665, 47336), (679, 46360), (760, 41419), (776, 40565), (854, 36860), (970, 32452), (1064, 29585), (1159, 27160), (1220, 25802), (1330, 23668), (1358, 23180), (1708, 18430), (1843, 17080), (1940, 16226), (2135, 14744), (2318, 13580), (2440, 12901), (2660, 11834), (2716, 11590), (3395, 9272), (3416, 9215), (3686, 8540), (3880, 8113), (4270, 7372), (4636, 6790), (5320, 5917), (5432, 5795)]