18200720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:264

約数の個数: 80

約数和(自身を含む): 44997120

約数和(自身を除く): 26796400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 179, 205, 248, 310, 328, 358, 410, 496, 620, 656, 716, 820, 895, 1240, 1271, 1432, 1640, 1790, 2480, 2542, 2864, 3280, 3580, 5084, 5549, 6355, 7160, 7339, 10168, 11098, 12710, 14320, 14678, 20336, 22196, 25420, 27745, 29356, 36695, 44392, 50840, 55490, 58712, 73390, 88784, 101680, 110980, 117424, 146780, 221960, 227509, 293560, 443920, 455018, 587120, 910036, 1137545, 1820072, 2275090, 3640144, 4550180, 9100360, 18200720]

約数ペア:

[(1, 18200720), (2, 9100360), (4, 4550180), (5, 3640144), (8, 2275090), (10, 1820072), (16, 1137545), (20, 910036), (31, 587120), (40, 455018), (41, 443920), (62, 293560), (80, 227509), (82, 221960), (124, 146780), (155, 117424), (164, 110980), (179, 101680), (205, 88784), (248, 73390), (310, 58712), (328, 55490), (358, 50840), (410, 44392), (496, 36695), (620, 29356), (656, 27745), (716, 25420), (820, 22196), (895, 20336), (1240, 14678), (1271, 14320), (1432, 12710), (1640, 11098), (1790, 10168), (2480, 7339), (2542, 7160), (2864, 6355), (3280, 5549), (3580, 5084)]