28997820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2269}}^1$

素因数の和:2355

約数の個数: 72

約数和(自身を含む): 89238240

約数和(自身を除く): 60240420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 2130, 2269, 2556, 3195, 4260, 4538, 6390, 6807, 9076, 11345, 12780, 13614, 20421, 22690, 27228, 34035, 40842, 45380, 68070, 81684, 102105, 136140, 161099, 204210, 322198, 408420, 483297, 644396, 805495, 966594, 1449891, 1610990, 1933188, 2416485, 2899782, 3221980, 4832970, 5799564, 7249455, 9665940, 14498910, 28997820]

約数ペア:

[(1, 28997820), (2, 14498910), (3, 9665940), (4, 7249455), (5, 5799564), (6, 4832970), (9, 3221980), (10, 2899782), (12, 2416485), (15, 1933188), (18, 1610990), (20, 1449891), (30, 966594), (36, 805495), (45, 644396), (60, 483297), (71, 408420), (90, 322198), (142, 204210), (180, 161099), (213, 136140), (284, 102105), (355, 81684), (426, 68070), (639, 45380), (710, 40842), (852, 34035), (1065, 27228), (1278, 22690), (1420, 20421), (2130, 13614), (2269, 12780), (2556, 11345), (3195, 9076), (4260, 6807), (4538, 6390)]