991681320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{38083}}^1$

素因数の和:38135

約数の個数: 128

約数和(自身を含む): 3509821440

約数和(自身を除く): 2518140120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 56, 60, 62, 70, 84, 93, 105, 120, 124, 140, 155, 168, 186, 210, 217, 248, 280, 310, 372, 420, 434, 465, 620, 651, 744, 840, 868, 930, 1085, 1240, 1302, 1736, 1860, 2170, 2604, 3255, 3720, 4340, 5208, 6510, 8680, 13020, 26040, 38083, 76166, 114249, 152332, 190415, 228498, 266581, 304664, 380830, 456996, 533162, 571245, 761660, 799743, 913992, 1066324, 1142490, 1180573, 1332905, 1523320, 1599486, 2132648, 2284980, 2361146, 2665810, 3198972, 3541719, 3998715, 4569960, 4722292, 5331620, 5902865, 6397944, 7083438, 7997430, 8264011, 9444584, 10663240, 11805730, 14166876, 15994860, 16528022, 17708595, 23611460, 24792033, 28333752, 31989720, 33056044, 35417190, 41320055, 47222920, 49584066, 66112088, 70834380, 82640110, 99168132, 123960165, 141668760, 165280220, 198336264, 247920330, 330560440, 495840660, 991681320]

約数ペア:

[(1, 991681320), (2, 495840660), (3, 330560440), (4, 247920330), (5, 198336264), (6, 165280220), (7, 141668760), (8, 123960165), (10, 99168132), (12, 82640110), (14, 70834380), (15, 66112088), (20, 49584066), (21, 47222920), (24, 41320055), (28, 35417190), (30, 33056044), (31, 31989720), (35, 28333752), (40, 24792033), (42, 23611460), (56, 17708595), (60, 16528022), (62, 15994860), (70, 14166876), (84, 11805730), (93, 10663240), (105, 9444584), (120, 8264011), (124, 7997430), (140, 7083438), (155, 6397944), (168, 5902865), (186, 5331620), (210, 4722292), (217, 4569960), (248, 3998715), (280, 3541719), (310, 3198972), (372, 2665810), (420, 2361146), (434, 2284980), (465, 2132648), (620, 1599486), (651, 1523320), (744, 1332905), (840, 1180573), (868, 1142490), (930, 1066324), (1085, 913992), (1240, 799743), (1302, 761660), (1736, 571245), (1860, 533162), (2170, 456996), (2604, 380830), (3255, 304664), (3720, 266581), (4340, 228498), (5208, 190415), (6510, 152332), (8680, 114249), (13020, 76166), (26040, 38083)]