21960420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:245

約数の個数: 96

約数和(自身を含む): 64350720

約数和(自身を除く): 42390300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 41, 60, 79, 82, 113, 123, 158, 164, 205, 226, 237, 246, 316, 339, 395, 410, 452, 474, 492, 565, 615, 678, 790, 820, 948, 1130, 1185, 1230, 1356, 1580, 1695, 2260, 2370, 2460, 3239, 3390, 4633, 4740, 6478, 6780, 8927, 9266, 9717, 12956, 13899, 16195, 17854, 18532, 19434, 23165, 26781, 27798, 32390, 35708, 38868, 44635, 46330, 48585, 53562, 55596, 64780, 69495, 89270, 92660, 97170, 107124, 133905, 138990, 178540, 194340, 267810, 277980, 366007, 535620, 732014, 1098021, 1464028, 1830035, 2196042, 3660070, 4392084, 5490105, 7320140, 10980210, 21960420]

約数ペア:

[(1, 21960420), (2, 10980210), (3, 7320140), (4, 5490105), (5, 4392084), (6, 3660070), (10, 2196042), (12, 1830035), (15, 1464028), (20, 1098021), (30, 732014), (41, 535620), (60, 366007), (79, 277980), (82, 267810), (113, 194340), (123, 178540), (158, 138990), (164, 133905), (205, 107124), (226, 97170), (237, 92660), (246, 89270), (316, 69495), (339, 64780), (395, 55596), (410, 53562), (452, 48585), (474, 46330), (492, 44635), (565, 38868), (615, 35708), (678, 32390), (790, 27798), (820, 26781), (948, 23165), (1130, 19434), (1185, 18532), (1230, 17854), (1356, 16195), (1580, 13899), (1695, 12956), (2260, 9717), (2370, 9266), (2460, 8927), (3239, 6780), (3390, 6478), (4633, 4740)]