20432560

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 49818240

約数和(自身を除く): 29385680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 61, 79, 80, 106, 122, 158, 212, 244, 265, 305, 316, 395, 424, 488, 530, 610, 632, 790, 848, 976, 1060, 1220, 1264, 1580, 2120, 2440, 3160, 3233, 4187, 4240, 4819, 4880, 6320, 6466, 8374, 9638, 12932, 16165, 16748, 19276, 20935, 24095, 25864, 32330, 33496, 38552, 41870, 48190, 51728, 64660, 66992, 77104, 83740, 96380, 129320, 167480, 192760, 255407, 258640, 334960, 385520, 510814, 1021628, 1277035, 2043256, 2554070, 4086512, 5108140, 10216280, 20432560]

約数ペア:

[(1, 20432560), (2, 10216280), (4, 5108140), (5, 4086512), (8, 2554070), (10, 2043256), (16, 1277035), (20, 1021628), (40, 510814), (53, 385520), (61, 334960), (79, 258640), (80, 255407), (106, 192760), (122, 167480), (158, 129320), (212, 96380), (244, 83740), (265, 77104), (305, 66992), (316, 64660), (395, 51728), (424, 48190), (488, 41870), (530, 38552), (610, 33496), (632, 32330), (790, 25864), (848, 24095), (976, 20935), (1060, 19276), (1220, 16748), (1264, 16165), (1580, 12932), (2120, 9638), (2440, 8374), (3160, 6466), (3233, 6320), (4187, 4880), (4240, 4819)]