31991820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{211}}^1$

素因数の和:268

約数の個数: 144

約数和(自身を含む): 108557568

約数和(自身を除く): 76565748

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 211, 228, 266, 285, 361, 380, 399, 420, 422, 532, 570, 633, 665, 722, 798, 844, 1055, 1083, 1140, 1266, 1330, 1444, 1477, 1596, 1805, 1995, 2110, 2166, 2527, 2532, 2660, 2954, 3165, 3610, 3990, 4009, 4220, 4332, 4431, 5054, 5415, 5908, 6330, 7220, 7385, 7581, 7980, 8018, 8862, 10108, 10830, 12027, 12635, 12660, 14770, 15162, 16036, 17724, 20045, 21660, 22155, 24054, 25270, 28063, 29540, 30324, 37905, 40090, 44310, 48108, 50540, 56126, 60135, 75810, 76171, 80180, 84189, 88620, 112252, 120270, 140315, 151620, 152342, 168378, 228513, 240540, 280630, 304684, 336756, 380855, 420945, 457026, 533197, 561260, 761710, 841890, 914052, 1066394, 1142565, 1523420, 1599591, 1683780, 2132788, 2285130, 2665985, 3199182, 4570260, 5331970, 6398364, 7997955, 10663940, 15995910, 31991820]

約数ペア:

[(1, 31991820), (2, 15995910), (3, 10663940), (4, 7997955), (5, 6398364), (6, 5331970), (7, 4570260), (10, 3199182), (12, 2665985), (14, 2285130), (15, 2132788), (19, 1683780), (20, 1599591), (21, 1523420), (28, 1142565), (30, 1066394), (35, 914052), (38, 841890), (42, 761710), (57, 561260), (60, 533197), (70, 457026), (76, 420945), (84, 380855), (95, 336756), (105, 304684), (114, 280630), (133, 240540), (140, 228513), (190, 168378), (210, 152342), (211, 151620), (228, 140315), (266, 120270), (285, 112252), (361, 88620), (380, 84189), (399, 80180), (420, 76171), (422, 75810), (532, 60135), (570, 56126), (633, 50540), (665, 48108), (722, 44310), (798, 40090), (844, 37905), (1055, 30324), (1083, 29540), (1140, 28063), (1266, 25270), (1330, 24054), (1444, 22155), (1477, 21660), (1596, 20045), (1805, 17724), (1995, 16036), (2110, 15162), (2166, 14770), (2527, 12660), (2532, 12635), (2660, 12027), (2954, 10830), (3165, 10108), (3610, 8862), (3990, 8018), (4009, 7980), (4220, 7581), (4332, 7385), (4431, 7220), (5054, 6330), (5415, 5908)]