18979485

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{271}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 37601280

約数和(自身を除く): 18621795

約数列:

[1, 3, 5, 7, 15, 21, 23, 29, 35, 69, 87, 105, 115, 145, 161, 203, 271, 345, 435, 483, 609, 667, 805, 813, 1015, 1355, 1897, 2001, 2415, 3045, 3335, 4065, 4669, 5691, 6233, 7859, 9485, 10005, 14007, 18699, 23345, 23577, 28455, 31165, 39295, 43631, 55013, 70035, 93495, 117885, 130893, 165039, 180757, 218155, 275065, 542271, 654465, 825195, 903785, 1265299, 2711355, 3795897, 6326495, 18979485]

約数ペア:

[(1, 18979485), (3, 6326495), (5, 3795897), (7, 2711355), (15, 1265299), (21, 903785), (23, 825195), (29, 654465), (35, 542271), (69, 275065), (87, 218155), (105, 180757), (115, 165039), (145, 130893), (161, 117885), (203, 93495), (271, 70035), (345, 55013), (435, 43631), (483, 39295), (609, 31165), (667, 28455), (805, 23577), (813, 23345), (1015, 18699), (1355, 14007), (1897, 10005), (2001, 9485), (2415, 7859), (3045, 6233), (3335, 5691), (4065, 4669)]