1993156780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{881}}^1$

素因数の和:1051

約数の個数: 96

約数和(自身を含む): 4480842240

約数和(自身を除く): 2487685460

約数列:

[1, 2, 4, 5, 10, 20, 31, 41, 62, 82, 89, 124, 155, 164, 178, 205, 310, 356, 410, 445, 620, 820, 881, 890, 1271, 1762, 1780, 2542, 2759, 3524, 3649, 4405, 5084, 5518, 6355, 7298, 8810, 11036, 12710, 13795, 14596, 17620, 18245, 25420, 27311, 27590, 36121, 36490, 54622, 55180, 72242, 72980, 78409, 109244, 113119, 136555, 144484, 156818, 180605, 226238, 273110, 313636, 361210, 392045, 452476, 546220, 565595, 722420, 784090, 1119751, 1131190, 1568180, 2239502, 2262380, 2430679, 3214769, 4479004, 4861358, 5598755, 6429538, 9722716, 11197510, 12153395, 12859076, 16073845, 22395020, 24306790, 32147690, 48613580, 64295380, 99657839, 199315678, 398631356, 498289195, 996578390, 1993156780]

約数ペア:

[(1, 1993156780), (2, 996578390), (4, 498289195), (5, 398631356), (10, 199315678), (20, 99657839), (31, 64295380), (41, 48613580), (62, 32147690), (82, 24306790), (89, 22395020), (124, 16073845), (155, 12859076), (164, 12153395), (178, 11197510), (205, 9722716), (310, 6429538), (356, 5598755), (410, 4861358), (445, 4479004), (620, 3214769), (820, 2430679), (881, 2262380), (890, 2239502), (1271, 1568180), (1762, 1131190), (1780, 1119751), (2542, 784090), (2759, 722420), (3524, 565595), (3649, 546220), (4405, 452476), (5084, 392045), (5518, 361210), (6355, 313636), (7298, 273110), (8810, 226238), (11036, 180605), (12710, 156818), (13795, 144484), (14596, 136555), (17620, 113119), (18245, 109244), (25420, 78409), (27311, 72980), (27590, 72242), (36121, 55180), (36490, 54622)]