20403460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13249}}^1$

素因数の和:13276

約数の個数: 48

約数和(自身を含む): 53424000

約数和(自身を除く): 33020540

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13249, 26498, 52996, 66245, 92743, 132490, 145739, 185486, 264980, 291478, 370972, 463715, 582956, 728695, 927430, 1020173, 1457390, 1854860, 2040346, 2914780, 4080692, 5100865, 10201730, 20403460]

約数ペア:

[(1, 20403460), (2, 10201730), (4, 5100865), (5, 4080692), (7, 2914780), (10, 2040346), (11, 1854860), (14, 1457390), (20, 1020173), (22, 927430), (28, 728695), (35, 582956), (44, 463715), (55, 370972), (70, 291478), (77, 264980), (110, 185486), (140, 145739), (154, 132490), (220, 92743), (308, 66245), (385, 52996), (770, 26498), (1540, 13249)]