28881825

素因数分解:

$3^1\times 5^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:327

約数の個数: 72

約数和(自身を含む): 57674880

約数和(自身を除く): 28793055

約数列:

[1, 3, 5, 7, 15, 21, 25, 29, 35, 49, 75, 87, 105, 145, 147, 175, 203, 245, 271, 435, 525, 609, 725, 735, 813, 1015, 1225, 1355, 1421, 1897, 2175, 3045, 3675, 4065, 4263, 5075, 5691, 6775, 7105, 7859, 9485, 13279, 15225, 20325, 21315, 23577, 28455, 35525, 39295, 39837, 47425, 55013, 66395, 106575, 117885, 142275, 165039, 196475, 199185, 275065, 331975, 385091, 589425, 825195, 995925, 1155273, 1375325, 1925455, 4125975, 5776365, 9627275, 28881825]

約数ペア:

[(1, 28881825), (3, 9627275), (5, 5776365), (7, 4125975), (15, 1925455), (21, 1375325), (25, 1155273), (29, 995925), (35, 825195), (49, 589425), (75, 385091), (87, 331975), (105, 275065), (145, 199185), (147, 196475), (175, 165039), (203, 142275), (245, 117885), (271, 106575), (435, 66395), (525, 55013), (609, 47425), (725, 39837), (735, 39295), (813, 35525), (1015, 28455), (1225, 23577), (1355, 21315), (1421, 20325), (1897, 15225), (2175, 13279), (3045, 9485), (3675, 7859), (4065, 7105), (4263, 6775), (5075, 5691)]