19999020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{331}}^1$

素因数の和:415

約数の個数: 96

約数和(自身を含む): 60238080

約数和(自身を除く): 40239060

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 53, 57, 60, 76, 95, 106, 114, 159, 190, 212, 228, 265, 285, 318, 331, 380, 530, 570, 636, 662, 795, 993, 1007, 1060, 1140, 1324, 1590, 1655, 1986, 2014, 3021, 3180, 3310, 3972, 4028, 4965, 5035, 6042, 6289, 6620, 9930, 10070, 12084, 12578, 15105, 17543, 18867, 19860, 20140, 25156, 30210, 31445, 35086, 37734, 52629, 60420, 62890, 70172, 75468, 87715, 94335, 105258, 125780, 175430, 188670, 210516, 263145, 333317, 350860, 377340, 526290, 666634, 999951, 1052580, 1333268, 1666585, 1999902, 3333170, 3999804, 4999755, 6666340, 9999510, 19999020]

約数ペア:

[(1, 19999020), (2, 9999510), (3, 6666340), (4, 4999755), (5, 3999804), (6, 3333170), (10, 1999902), (12, 1666585), (15, 1333268), (19, 1052580), (20, 999951), (30, 666634), (38, 526290), (53, 377340), (57, 350860), (60, 333317), (76, 263145), (95, 210516), (106, 188670), (114, 175430), (159, 125780), (190, 105258), (212, 94335), (228, 87715), (265, 75468), (285, 70172), (318, 62890), (331, 60420), (380, 52629), (530, 37734), (570, 35086), (636, 31445), (662, 30210), (795, 25156), (993, 20140), (1007, 19860), (1060, 18867), (1140, 17543), (1324, 15105), (1590, 12578), (1655, 12084), (1986, 10070), (2014, 9930), (3021, 6620), (3180, 6289), (3310, 6042), (3972, 5035), (4028, 4965)]