19908225

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{3847}}^1$

素因数の和:3886

約数の個数: 36

約数和(自身を含む): 37217856

約数和(自身を除く): 17309631

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 3847, 5175, 11541, 19235, 34623, 57705, 88481, 96175, 173115, 265443, 288525, 442405, 796329, 865575, 1327215, 2212025, 3981645, 6636075, 19908225]

約数ペア:

[(1, 19908225), (3, 6636075), (5, 3981645), (9, 2212025), (15, 1327215), (23, 865575), (25, 796329), (45, 442405), (69, 288525), (75, 265443), (115, 173115), (207, 96175), (225, 88481), (345, 57705), (575, 34623), (1035, 19235), (1725, 11541), (3847, 5175)]