25293040

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:218

約数の個数: 80

約数和(自身を含む): 61442496

約数和(自身を除く): 36149456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 71, 73, 80, 122, 142, 146, 244, 284, 292, 305, 355, 365, 488, 568, 584, 610, 710, 730, 976, 1136, 1168, 1220, 1420, 1460, 2440, 2840, 2920, 4331, 4453, 4880, 5183, 5680, 5840, 8662, 8906, 10366, 17324, 17812, 20732, 21655, 22265, 25915, 34648, 35624, 41464, 43310, 44530, 51830, 69296, 71248, 82928, 86620, 89060, 103660, 173240, 178120, 207320, 316163, 346480, 356240, 414640, 632326, 1264652, 1580815, 2529304, 3161630, 5058608, 6323260, 12646520, 25293040]

約数ペア:

[(1, 25293040), (2, 12646520), (4, 6323260), (5, 5058608), (8, 3161630), (10, 2529304), (16, 1580815), (20, 1264652), (40, 632326), (61, 414640), (71, 356240), (73, 346480), (80, 316163), (122, 207320), (142, 178120), (146, 173240), (244, 103660), (284, 89060), (292, 86620), (305, 82928), (355, 71248), (365, 69296), (488, 51830), (568, 44530), (584, 43310), (610, 41464), (710, 35624), (730, 34648), (976, 25915), (1136, 22265), (1168, 21655), (1220, 20732), (1420, 17812), (1460, 17324), (2440, 10366), (2840, 8906), (2920, 8662), (4331, 5840), (4453, 5680), (4880, 5183)]