1687116100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^2$

素因数の和:290

約数の個数: 108

約数和(自身を含む): 3873640960

約数和(自身を除く): 2186524860

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 79, 83, 100, 124, 155, 158, 166, 310, 316, 332, 395, 415, 620, 775, 790, 830, 1550, 1580, 1660, 1975, 2075, 2449, 2573, 3100, 3950, 4150, 4898, 5146, 6557, 6889, 7900, 8300, 9796, 10292, 12245, 12865, 13114, 13778, 24490, 25730, 26228, 27556, 32785, 34445, 48980, 51460, 61225, 64325, 65570, 68890, 122450, 128650, 131140, 137780, 163925, 172225, 203267, 213559, 244900, 257300, 327850, 344450, 406534, 427118, 544231, 655700, 688900, 813068, 854236, 1016335, 1067795, 1088462, 2032670, 2135590, 2176924, 2721155, 4065340, 4271180, 5081675, 5338975, 5442310, 10163350, 10677950, 10884620, 13605775, 16871161, 20326700, 21355900, 27211550, 33742322, 54423100, 67484644, 84355805, 168711610, 337423220, 421779025, 843558050, 1687116100]

約数ペア:

[(1, 1687116100), (2, 843558050), (4, 421779025), (5, 337423220), (10, 168711610), (20, 84355805), (25, 67484644), (31, 54423100), (50, 33742322), (62, 27211550), (79, 21355900), (83, 20326700), (100, 16871161), (124, 13605775), (155, 10884620), (158, 10677950), (166, 10163350), (310, 5442310), (316, 5338975), (332, 5081675), (395, 4271180), (415, 4065340), (620, 2721155), (775, 2176924), (790, 2135590), (830, 2032670), (1550, 1088462), (1580, 1067795), (1660, 1016335), (1975, 854236), (2075, 813068), (2449, 688900), (2573, 655700), (3100, 544231), (3950, 427118), (4150, 406534), (4898, 344450), (5146, 327850), (6557, 257300), (6889, 244900), (7900, 213559), (8300, 203267), (9796, 172225), (10292, 163925), (12245, 137780), (12865, 131140), (13114, 128650), (13778, 122450), (24490, 68890), (25730, 65570), (26228, 64325), (27556, 61225), (32785, 51460), (34445, 48980)]