18428475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{461}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 33685344

約数和(自身を除く): 15256869

約数列:

[1, 3, 5, 13, 15, 25, 39, 41, 65, 75, 123, 195, 205, 325, 461, 533, 615, 975, 1025, 1383, 1599, 2305, 2665, 3075, 5993, 6915, 7995, 11525, 13325, 17979, 18901, 29965, 34575, 39975, 56703, 89895, 94505, 149825, 245713, 283515, 449475, 472525, 737139, 1228565, 1417575, 3685695, 6142825, 18428475]

約数ペア:

[(1, 18428475), (3, 6142825), (5, 3685695), (13, 1417575), (15, 1228565), (25, 737139), (39, 472525), (41, 449475), (65, 283515), (75, 245713), (123, 149825), (195, 94505), (205, 89895), (325, 56703), (461, 39975), (533, 34575), (615, 29965), (975, 18901), (1025, 17979), (1383, 13325), (1599, 11525), (2305, 7995), (2665, 6915), (3075, 5993)]