19981120

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3673}}^1$

素因数の和:3707

約数の個数: 56

約数和(自身を含む): 50392584

約数和(自身を除く): 30411464

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3673, 5440, 7346, 14692, 18365, 29384, 36730, 58768, 62441, 73460, 117536, 124882, 146920, 235072, 249764, 293840, 312205, 499528, 587680, 624410, 999056, 1175360, 1248820, 1998112, 2497640, 3996224, 4995280, 9990560, 19981120]

約数ペア:

[(1, 19981120), (2, 9990560), (4, 4995280), (5, 3996224), (8, 2497640), (10, 1998112), (16, 1248820), (17, 1175360), (20, 999056), (32, 624410), (34, 587680), (40, 499528), (64, 312205), (68, 293840), (80, 249764), (85, 235072), (136, 146920), (160, 124882), (170, 117536), (272, 73460), (320, 62441), (340, 58768), (544, 36730), (680, 29384), (1088, 18365), (1360, 14692), (2720, 7346), (3673, 5440)]