19948810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{317}}^1$

素因数の和:391

約数の個数: 64

約数和(自身を含む): 43960320

約数和(自身を除く): 24011510

約数列:

[1, 2, 5, 7, 10, 14, 29, 31, 35, 58, 62, 70, 145, 155, 203, 217, 290, 310, 317, 406, 434, 634, 899, 1015, 1085, 1585, 1798, 2030, 2170, 2219, 3170, 4438, 4495, 6293, 8990, 9193, 9827, 11095, 12586, 18386, 19654, 22190, 31465, 45965, 49135, 62930, 64351, 68789, 91930, 98270, 128702, 137578, 284983, 321755, 343945, 569966, 643510, 687890, 1424915, 1994881, 2849830, 3989762, 9974405, 19948810]

約数ペア:

[(1, 19948810), (2, 9974405), (5, 3989762), (7, 2849830), (10, 1994881), (14, 1424915), (29, 687890), (31, 643510), (35, 569966), (58, 343945), (62, 321755), (70, 284983), (145, 137578), (155, 128702), (203, 98270), (217, 91930), (290, 68789), (310, 64351), (317, 62930), (406, 49135), (434, 45965), (634, 31465), (899, 22190), (1015, 19654), (1085, 18386), (1585, 12586), (1798, 11095), (2030, 9827), (2170, 9193), (2219, 8990), (3170, 6293), (4438, 4495)]