21157452

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{191}}^1$

素因数の和:399

約数の個数: 72

約数和(自身を含む): 57238272

約数和(自身を除く): 36080820

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 102, 153, 181, 191, 204, 306, 362, 382, 543, 573, 612, 724, 764, 1086, 1146, 1629, 1719, 2172, 2292, 3077, 3247, 3258, 3438, 6154, 6494, 6516, 6876, 9231, 9741, 12308, 12988, 18462, 19482, 27693, 29223, 34571, 36924, 38964, 55386, 58446, 69142, 103713, 110772, 116892, 138284, 207426, 311139, 414852, 587707, 622278, 1175414, 1244556, 1763121, 2350828, 3526242, 5289363, 7052484, 10578726, 21157452]

約数ペア:

[(1, 21157452), (2, 10578726), (3, 7052484), (4, 5289363), (6, 3526242), (9, 2350828), (12, 1763121), (17, 1244556), (18, 1175414), (34, 622278), (36, 587707), (51, 414852), (68, 311139), (102, 207426), (153, 138284), (181, 116892), (191, 110772), (204, 103713), (306, 69142), (362, 58446), (382, 55386), (543, 38964), (573, 36924), (612, 34571), (724, 29223), (764, 27693), (1086, 19482), (1146, 18462), (1629, 12988), (1719, 12308), (2172, 9741), (2292, 9231), (3077, 6876), (3247, 6516), (3258, 6494), (3438, 6154)]