31920720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{787}}^1$

素因数の和:829

約数の個数: 120

約数和(自身を含む): 107287776

約数和(自身を除く): 75367056

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 169, 195, 208, 240, 260, 312, 338, 390, 507, 520, 624, 676, 780, 787, 845, 1014, 1040, 1352, 1560, 1574, 1690, 2028, 2361, 2535, 2704, 3120, 3148, 3380, 3935, 4056, 4722, 5070, 6296, 6760, 7870, 8112, 9444, 10140, 10231, 11805, 12592, 13520, 15740, 18888, 20280, 20462, 23610, 30693, 31480, 37776, 40560, 40924, 47220, 51155, 61386, 62960, 81848, 94440, 102310, 122772, 133003, 153465, 163696, 188880, 204620, 245544, 266006, 306930, 399009, 409240, 491088, 532012, 613860, 665015, 798018, 818480, 1064024, 1227720, 1330030, 1596036, 1995045, 2128048, 2455440, 2660060, 3192072, 3990090, 5320120, 6384144, 7980180, 10640240, 15960360, 31920720]

約数ペア:

[(1, 31920720), (2, 15960360), (3, 10640240), (4, 7980180), (5, 6384144), (6, 5320120), (8, 3990090), (10, 3192072), (12, 2660060), (13, 2455440), (15, 2128048), (16, 1995045), (20, 1596036), (24, 1330030), (26, 1227720), (30, 1064024), (39, 818480), (40, 798018), (48, 665015), (52, 613860), (60, 532012), (65, 491088), (78, 409240), (80, 399009), (104, 306930), (120, 266006), (130, 245544), (156, 204620), (169, 188880), (195, 163696), (208, 153465), (240, 133003), (260, 122772), (312, 102310), (338, 94440), (390, 81848), (507, 62960), (520, 61386), (624, 51155), (676, 47220), (780, 40924), (787, 40560), (845, 37776), (1014, 31480), (1040, 30693), (1352, 23610), (1560, 20462), (1574, 20280), (1690, 18888), (2028, 15740), (2361, 13520), (2535, 12592), (2704, 11805), (3120, 10231), (3148, 10140), (3380, 9444), (3935, 8112), (4056, 7870), (4722, 6760), (5070, 6296)]