21994345

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:561

約数の個数: 24

約数和(自身を含む): 29000448

約数和(自身を除く): 7006103

約数列:

[1, 5, 17, 31, 85, 155, 289, 491, 527, 1445, 2455, 2635, 8347, 8959, 15221, 41735, 44795, 76105, 141899, 258757, 709495, 1293785, 4398869, 21994345]

約数ペア:

[(1, 21994345), (5, 4398869), (17, 1293785), (31, 709495), (85, 258757), (155, 141899), (289, 76105), (491, 44795), (527, 41735), (1445, 15221), (2455, 8959), (2635, 8347)]