28971280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{313}}^1$

素因数の和:428

約数の個数: 80

約数和(自身を含む): 73589040

約数和(自身を除く): 44617760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 89, 104, 130, 178, 208, 260, 313, 356, 445, 520, 626, 712, 890, 1040, 1157, 1252, 1424, 1565, 1780, 2314, 2504, 3130, 3560, 4069, 4628, 5008, 5785, 6260, 7120, 8138, 9256, 11570, 12520, 16276, 18512, 20345, 23140, 25040, 27857, 32552, 40690, 46280, 55714, 65104, 81380, 92560, 111428, 139285, 162760, 222856, 278570, 325520, 362141, 445712, 557140, 724282, 1114280, 1448564, 1810705, 2228560, 2897128, 3621410, 5794256, 7242820, 14485640, 28971280]

約数ペア:

[(1, 28971280), (2, 14485640), (4, 7242820), (5, 5794256), (8, 3621410), (10, 2897128), (13, 2228560), (16, 1810705), (20, 1448564), (26, 1114280), (40, 724282), (52, 557140), (65, 445712), (80, 362141), (89, 325520), (104, 278570), (130, 222856), (178, 162760), (208, 139285), (260, 111428), (313, 92560), (356, 81380), (445, 65104), (520, 55714), (626, 46280), (712, 40690), (890, 32552), (1040, 27857), (1157, 25040), (1252, 23140), (1424, 20345), (1565, 18512), (1780, 16276), (2314, 12520), (2504, 11570), (3130, 9256), (3560, 8138), (4069, 7120), (4628, 6260), (5008, 5785)]