28734580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:401

約数の個数: 72

約数和(自身を含む): 71101800

約数和(自身を除く): 42367220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 109, 140, 196, 218, 245, 269, 436, 490, 538, 545, 763, 980, 1076, 1090, 1345, 1526, 1883, 2180, 2690, 3052, 3766, 3815, 5341, 5380, 7532, 7630, 9415, 10682, 13181, 15260, 18830, 21364, 26362, 26705, 29321, 37660, 52724, 53410, 58642, 65905, 106820, 117284, 131810, 146605, 205247, 263620, 293210, 410494, 586420, 820988, 1026235, 1436729, 2052470, 2873458, 4104940, 5746916, 7183645, 14367290, 28734580]

約数ペア:

[(1, 28734580), (2, 14367290), (4, 7183645), (5, 5746916), (7, 4104940), (10, 2873458), (14, 2052470), (20, 1436729), (28, 1026235), (35, 820988), (49, 586420), (70, 410494), (98, 293210), (109, 263620), (140, 205247), (196, 146605), (218, 131810), (245, 117284), (269, 106820), (436, 65905), (490, 58642), (538, 53410), (545, 52724), (763, 37660), (980, 29321), (1076, 26705), (1090, 26362), (1345, 21364), (1526, 18830), (1883, 15260), (2180, 13181), (2690, 10682), (3052, 9415), (3766, 7630), (3815, 7532), (5341, 5380)]