28918820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{1283}}^1$

素因数の和:1329

約数の個数: 72

約数和(自身を含む): 73773504

約数和(自身を除く): 44854684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 980, 1127, 1283, 1610, 2254, 2566, 3220, 4508, 5132, 5635, 6415, 8981, 11270, 12830, 17962, 22540, 25660, 29509, 35924, 44905, 59018, 62867, 89810, 118036, 125734, 147545, 179620, 206563, 251468, 295090, 314335, 413126, 590180, 628670, 826252, 1032815, 1257340, 1445941, 2065630, 2891882, 4131260, 5783764, 7229705, 14459410, 28918820]

約数ペア:

[(1, 28918820), (2, 14459410), (4, 7229705), (5, 5783764), (7, 4131260), (10, 2891882), (14, 2065630), (20, 1445941), (23, 1257340), (28, 1032815), (35, 826252), (46, 628670), (49, 590180), (70, 413126), (92, 314335), (98, 295090), (115, 251468), (140, 206563), (161, 179620), (196, 147545), (230, 125734), (245, 118036), (322, 89810), (460, 62867), (490, 59018), (644, 44905), (805, 35924), (980, 29509), (1127, 25660), (1283, 22540), (1610, 17962), (2254, 12830), (2566, 11270), (3220, 8981), (4508, 6415), (5132, 5635)]