201813220720

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{2423}}^1\times {\mathrm{2473}}^1$

素因数の和:5330

約数の個数: 80

約数和(自身を含む): 470714640192

約数和(自身を除く): 268901419472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 842, 1684, 2105, 2423, 2473, 3368, 4210, 4846, 4946, 6736, 8420, 9692, 9892, 12115, 12365, 16840, 19384, 19784, 24230, 24730, 33680, 38768, 39568, 48460, 49460, 96920, 98920, 193840, 197840, 1020083, 1041133, 2040166, 2082266, 4080332, 4164532, 5100415, 5205665, 5992079, 8160664, 8329064, 10200830, 10411330, 11984158, 16321328, 16658128, 20401660, 20822660, 23968316, 29960395, 40803320, 41645320, 47936632, 59920790, 81606640, 83290640, 95873264, 119841580, 239683160, 479366320, 2522665259, 5045330518, 10090661036, 12613326295, 20181322072, 25226652590, 40362644144, 50453305180, 100906610360, 201813220720]

約数ペア:

[(1, 201813220720), (2, 100906610360), (4, 50453305180), (5, 40362644144), (8, 25226652590), (10, 20181322072), (16, 12613326295), (20, 10090661036), (40, 5045330518), (80, 2522665259), (421, 479366320), (842, 239683160), (1684, 119841580), (2105, 95873264), (2423, 83290640), (2473, 81606640), (3368, 59920790), (4210, 47936632), (4846, 41645320), (4946, 40803320), (6736, 29960395), (8420, 23968316), (9692, 20822660), (9892, 20401660), (12115, 16658128), (12365, 16321328), (16840, 11984158), (19384, 10411330), (19784, 10200830), (24230, 8329064), (24730, 8160664), (33680, 5992079), (38768, 5205665), (39568, 5100415), (48460, 4164532), (49460, 4080332), (96920, 2082266), (98920, 2040166), (193840, 1041133), (197840, 1020083)]