18917440

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1907}}^1$

素因数の和:1955

約数の個数: 56

約数和(自身を含む): 46524672

約数和(自身を除く): 27607232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1907, 1984, 2480, 3814, 4960, 7628, 9535, 9920, 15256, 19070, 30512, 38140, 59117, 61024, 76280, 118234, 122048, 152560, 236468, 295585, 305120, 472936, 591170, 610240, 945872, 1182340, 1891744, 2364680, 3783488, 4729360, 9458720, 18917440]

約数ペア:

[(1, 18917440), (2, 9458720), (4, 4729360), (5, 3783488), (8, 2364680), (10, 1891744), (16, 1182340), (20, 945872), (31, 610240), (32, 591170), (40, 472936), (62, 305120), (64, 295585), (80, 236468), (124, 152560), (155, 122048), (160, 118234), (248, 76280), (310, 61024), (320, 59117), (496, 38140), (620, 30512), (992, 19070), (1240, 15256), (1907, 9920), (1984, 9535), (2480, 7628), (3814, 4960)]