1638822020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{907}}^1$

素因数の和:1161

約数の個数: 96

約数和(自身を含む): 3866075136

約数和(自身を除く): 2227253116

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 191, 215, 220, 382, 430, 473, 764, 860, 907, 946, 955, 1814, 1892, 1910, 2101, 2365, 3628, 3820, 4202, 4535, 4730, 8213, 8404, 9070, 9460, 9977, 10505, 16426, 18140, 19954, 21010, 32852, 39001, 39908, 41065, 42020, 49885, 78002, 82130, 90343, 99770, 156004, 164260, 173237, 180686, 195005, 199540, 346474, 361372, 390010, 429011, 451715, 692948, 780020, 858022, 866185, 903430, 1716044, 1732370, 1806860, 1905607, 2145055, 3464740, 3811214, 4290110, 7449191, 7622428, 8580220, 9528035, 14898382, 19056070, 29796764, 37245955, 38112140, 74491910, 81941101, 148983820, 163882202, 327764404, 409705505, 819411010, 1638822020]

約数ペア:

[(1, 1638822020), (2, 819411010), (4, 409705505), (5, 327764404), (10, 163882202), (11, 148983820), (20, 81941101), (22, 74491910), (43, 38112140), (44, 37245955), (55, 29796764), (86, 19056070), (110, 14898382), (172, 9528035), (191, 8580220), (215, 7622428), (220, 7449191), (382, 4290110), (430, 3811214), (473, 3464740), (764, 2145055), (860, 1905607), (907, 1806860), (946, 1732370), (955, 1716044), (1814, 903430), (1892, 866185), (1910, 858022), (2101, 780020), (2365, 692948), (3628, 451715), (3820, 429011), (4202, 390010), (4535, 361372), (4730, 346474), (8213, 199540), (8404, 195005), (9070, 180686), (9460, 173237), (9977, 164260), (10505, 156004), (16426, 99770), (18140, 90343), (19954, 82130), (21010, 78002), (32852, 49885), (39001, 42020), (39908, 41065)]