21676905

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{379}}^1$

素因数の和:462

約数の個数: 48

約数和(自身を含む): 39836160

約数和(自身を除く): 18159255

約数列:

[1, 3, 5, 9, 15, 31, 41, 45, 93, 123, 155, 205, 279, 369, 379, 465, 615, 1137, 1271, 1395, 1845, 1895, 3411, 3813, 5685, 6355, 11439, 11749, 15539, 17055, 19065, 35247, 46617, 57195, 58745, 77695, 105741, 139851, 176235, 233085, 481709, 528705, 699255, 1445127, 2408545, 4335381, 7225635, 21676905]

約数ペア:

[(1, 21676905), (3, 7225635), (5, 4335381), (9, 2408545), (15, 1445127), (31, 699255), (41, 528705), (45, 481709), (93, 233085), (123, 176235), (155, 139851), (205, 105741), (279, 77695), (369, 58745), (379, 57195), (465, 46617), (615, 35247), (1137, 19065), (1271, 17055), (1395, 15539), (1845, 11749), (1895, 11439), (3411, 6355), (3813, 5685)]