21136401920

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^1\times {\mathrm{485671}}^1$

素因数の和:485711

約数の個数: 80

約数和(自身を含む): 53658985248

約数和(自身を除く): 32522583328

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 512, 544, 640, 680, 1088, 1280, 1360, 2176, 2560, 2720, 4352, 5440, 8704, 10880, 21760, 43520, 485671, 971342, 1942684, 2428355, 3885368, 4856710, 7770736, 8256407, 9713420, 15541472, 16512814, 19426840, 31082944, 33025628, 38853680, 41282035, 62165888, 66051256, 77707360, 82564070, 124331776, 132102512, 155414720, 165128140, 248663552, 264205024, 310829440, 330256280, 528410048, 621658880, 660512560, 1056820096, 1243317760, 1321025120, 2113640192, 2642050240, 4227280384, 5284100480, 10568200960, 21136401920]

約数ペア:

[(1, 21136401920), (2, 10568200960), (4, 5284100480), (5, 4227280384), (8, 2642050240), (10, 2113640192), (16, 1321025120), (17, 1243317760), (20, 1056820096), (32, 660512560), (34, 621658880), (40, 528410048), (64, 330256280), (68, 310829440), (80, 264205024), (85, 248663552), (128, 165128140), (136, 155414720), (160, 132102512), (170, 124331776), (256, 82564070), (272, 77707360), (320, 66051256), (340, 62165888), (512, 41282035), (544, 38853680), (640, 33025628), (680, 31082944), (1088, 19426840), (1280, 16512814), (1360, 15541472), (2176, 9713420), (2560, 8256407), (2720, 7770736), (4352, 4856710), (5440, 3885368), (8704, 2428355), (10880, 1942684), (21760, 971342), (43520, 485671)]