19721115

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 35982336

約数和(自身を除く): 16261221

約数列:

[1, 3, 5, 9, 15, 31, 45, 67, 93, 155, 201, 211, 279, 335, 465, 603, 633, 1005, 1055, 1395, 1899, 2077, 3015, 3165, 6231, 6541, 9495, 10385, 14137, 18693, 19623, 31155, 32705, 42411, 58869, 70685, 93465, 98115, 127233, 212055, 294345, 438247, 636165, 1314741, 2191235, 3944223, 6573705, 19721115]

約数ペア:

[(1, 19721115), (3, 6573705), (5, 3944223), (9, 2191235), (15, 1314741), (31, 636165), (45, 438247), (67, 294345), (93, 212055), (155, 127233), (201, 98115), (211, 93465), (279, 70685), (335, 58869), (465, 42411), (603, 32705), (633, 31155), (1005, 19623), (1055, 18693), (1395, 14137), (1899, 10385), (2077, 9495), (3015, 6541), (3165, 6231)]