40816720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{3169}}^1$

素因数の和:3212

約数の個数: 80

約数和(自身を含む): 113207040

約数和(自身を除く): 72390320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1610, 1840, 2576, 3169, 3220, 6338, 6440, 12676, 12880, 15845, 22183, 25352, 31690, 44366, 50704, 63380, 72887, 88732, 110915, 126760, 145774, 177464, 221830, 253520, 291548, 354928, 364435, 443660, 510209, 583096, 728870, 887320, 1020418, 1166192, 1457740, 1774640, 2040836, 2551045, 2915480, 4081672, 5102090, 5830960, 8163344, 10204180, 20408360, 40816720]

約数ペア:

[(1, 40816720), (2, 20408360), (4, 10204180), (5, 8163344), (7, 5830960), (8, 5102090), (10, 4081672), (14, 2915480), (16, 2551045), (20, 2040836), (23, 1774640), (28, 1457740), (35, 1166192), (40, 1020418), (46, 887320), (56, 728870), (70, 583096), (80, 510209), (92, 443660), (112, 364435), (115, 354928), (140, 291548), (161, 253520), (184, 221830), (230, 177464), (280, 145774), (322, 126760), (368, 110915), (460, 88732), (560, 72887), (644, 63380), (805, 50704), (920, 44366), (1288, 31690), (1610, 25352), (1840, 22183), (2576, 15845), (3169, 12880), (3220, 12676), (6338, 6440)]