31815160

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:161

約数の個数: 128

約数和(自身を含む): 84369600

約数和(自身を除く): 52554440

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 59, 61, 65, 68, 85, 104, 118, 122, 130, 136, 170, 221, 236, 244, 260, 295, 305, 340, 442, 472, 488, 520, 590, 610, 680, 767, 793, 884, 1003, 1037, 1105, 1180, 1220, 1534, 1586, 1768, 2006, 2074, 2210, 2360, 2440, 3068, 3172, 3599, 3835, 3965, 4012, 4148, 4420, 5015, 5185, 6136, 6344, 7198, 7670, 7930, 8024, 8296, 8840, 10030, 10370, 13039, 13481, 14396, 15340, 15860, 17995, 20060, 20740, 26078, 26962, 28792, 30680, 31720, 35990, 40120, 41480, 46787, 52156, 53924, 61183, 65195, 67405, 71980, 93574, 104312, 107848, 122366, 130390, 134810, 143960, 187148, 233935, 244732, 260780, 269620, 305915, 374296, 467870, 489464, 521560, 539240, 611830, 795379, 935740, 1223660, 1590758, 1871480, 2447320, 3181516, 3976895, 6363032, 7953790, 15907580, 31815160]

約数ペア:

[(1, 31815160), (2, 15907580), (4, 7953790), (5, 6363032), (8, 3976895), (10, 3181516), (13, 2447320), (17, 1871480), (20, 1590758), (26, 1223660), (34, 935740), (40, 795379), (52, 611830), (59, 539240), (61, 521560), (65, 489464), (68, 467870), (85, 374296), (104, 305915), (118, 269620), (122, 260780), (130, 244732), (136, 233935), (170, 187148), (221, 143960), (236, 134810), (244, 130390), (260, 122366), (295, 107848), (305, 104312), (340, 93574), (442, 71980), (472, 67405), (488, 65195), (520, 61183), (590, 53924), (610, 52156), (680, 46787), (767, 41480), (793, 40120), (884, 35990), (1003, 31720), (1037, 30680), (1105, 28792), (1180, 26962), (1220, 26078), (1534, 20740), (1586, 20060), (1768, 17995), (2006, 15860), (2074, 15340), (2210, 14396), (2360, 13481), (2440, 13039), (3068, 10370), (3172, 10030), (3599, 8840), (3835, 8296), (3965, 8024), (4012, 7930), (4148, 7670), (4420, 7198), (5015, 6344), (5185, 6136)]