20449100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{223}}^1$

素因数の和:375

約数の個数: 72

約数和(自身を含む): 51330048

約数和(自身を除く): 30880948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 131, 140, 175, 223, 262, 350, 446, 524, 655, 700, 892, 917, 1115, 1310, 1561, 1834, 2230, 2620, 3122, 3275, 3668, 4460, 4585, 5575, 6244, 6550, 7805, 9170, 11150, 13100, 15610, 18340, 22300, 22925, 29213, 31220, 39025, 45850, 58426, 78050, 91700, 116852, 146065, 156100, 204491, 292130, 408982, 584260, 730325, 817964, 1022455, 1460650, 2044910, 2921300, 4089820, 5112275, 10224550, 20449100]

約数ペア:

[(1, 20449100), (2, 10224550), (4, 5112275), (5, 4089820), (7, 2921300), (10, 2044910), (14, 1460650), (20, 1022455), (25, 817964), (28, 730325), (35, 584260), (50, 408982), (70, 292130), (100, 204491), (131, 156100), (140, 146065), (175, 116852), (223, 91700), (262, 78050), (350, 58426), (446, 45850), (524, 39025), (655, 31220), (700, 29213), (892, 22925), (917, 22300), (1115, 18340), (1310, 15610), (1561, 13100), (1834, 11150), (2230, 9170), (2620, 7805), (3122, 6550), (3275, 6244), (3668, 5575), (4460, 4585)]