31161520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{83}}^1$

素因数の和:147

約数の個数: 120

約数和(自身を含む): 83338416

約数和(自身を除く): 52176896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 83, 95, 104, 130, 152, 166, 190, 208, 247, 260, 304, 332, 361, 380, 415, 494, 520, 664, 722, 760, 830, 988, 1040, 1079, 1235, 1328, 1444, 1520, 1577, 1660, 1805, 1976, 2158, 2470, 2888, 3154, 3320, 3610, 3952, 4316, 4693, 4940, 5395, 5776, 6308, 6640, 7220, 7885, 8632, 9386, 9880, 10790, 12616, 14440, 15770, 17264, 18772, 19760, 20501, 21580, 23465, 25232, 28880, 29963, 31540, 37544, 41002, 43160, 46930, 59926, 63080, 75088, 82004, 86320, 93860, 102505, 119852, 126160, 149815, 164008, 187720, 205010, 239704, 299630, 328016, 375440, 389519, 410020, 479408, 599260, 779038, 820040, 1198520, 1558076, 1640080, 1947595, 2397040, 3116152, 3895190, 6232304, 7790380, 15580760, 31161520]

約数ペア:

[(1, 31161520), (2, 15580760), (4, 7790380), (5, 6232304), (8, 3895190), (10, 3116152), (13, 2397040), (16, 1947595), (19, 1640080), (20, 1558076), (26, 1198520), (38, 820040), (40, 779038), (52, 599260), (65, 479408), (76, 410020), (80, 389519), (83, 375440), (95, 328016), (104, 299630), (130, 239704), (152, 205010), (166, 187720), (190, 164008), (208, 149815), (247, 126160), (260, 119852), (304, 102505), (332, 93860), (361, 86320), (380, 82004), (415, 75088), (494, 63080), (520, 59926), (664, 46930), (722, 43160), (760, 41002), (830, 37544), (988, 31540), (1040, 29963), (1079, 28880), (1235, 25232), (1328, 23465), (1444, 21580), (1520, 20501), (1577, 19760), (1660, 18772), (1805, 17264), (1976, 15770), (2158, 14440), (2470, 12616), (2888, 10790), (3154, 9880), (3320, 9386), (3610, 8632), (3952, 7885), (4316, 7220), (4693, 6640), (4940, 6308), (5395, 5776)]