28660240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{839}}^1$

素因数の和:920

約数の個数: 80

約数和(自身を含む): 77495040

約数和(自身を除く): 48834800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 839, 854, 976, 1220, 1678, 1708, 2135, 2440, 3356, 3416, 4195, 4270, 4880, 5873, 6712, 6832, 8390, 8540, 11746, 13424, 16780, 17080, 23492, 29365, 33560, 34160, 46984, 51179, 58730, 67120, 93968, 102358, 117460, 204716, 234920, 255895, 358253, 409432, 469840, 511790, 716506, 818864, 1023580, 1433012, 1791265, 2047160, 2866024, 3582530, 4094320, 5732048, 7165060, 14330120, 28660240]

約数ペア:

[(1, 28660240), (2, 14330120), (4, 7165060), (5, 5732048), (7, 4094320), (8, 3582530), (10, 2866024), (14, 2047160), (16, 1791265), (20, 1433012), (28, 1023580), (35, 818864), (40, 716506), (56, 511790), (61, 469840), (70, 409432), (80, 358253), (112, 255895), (122, 234920), (140, 204716), (244, 117460), (280, 102358), (305, 93968), (427, 67120), (488, 58730), (560, 51179), (610, 46984), (839, 34160), (854, 33560), (976, 29365), (1220, 23492), (1678, 17080), (1708, 16780), (2135, 13424), (2440, 11746), (3356, 8540), (3416, 8390), (4195, 6832), (4270, 6712), (4880, 5873)]