21847125

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 40435200

約数和(自身を除く): 18588075

約数列:

[1, 3, 5, 15, 17, 23, 25, 51, 69, 75, 85, 115, 125, 149, 255, 345, 375, 391, 425, 447, 575, 745, 1173, 1275, 1725, 1955, 2125, 2235, 2533, 2875, 3427, 3725, 5865, 6375, 7599, 8625, 9775, 10281, 11175, 12665, 17135, 18625, 29325, 37995, 48875, 51405, 55875, 58259, 63325, 85675, 146625, 174777, 189975, 257025, 291295, 316625, 428375, 873885, 949875, 1285125, 1456475, 4369425, 7282375, 21847125]

約数ペア:

[(1, 21847125), (3, 7282375), (5, 4369425), (15, 1456475), (17, 1285125), (23, 949875), (25, 873885), (51, 428375), (69, 316625), (75, 291295), (85, 257025), (115, 189975), (125, 174777), (149, 146625), (255, 85675), (345, 63325), (375, 58259), (391, 55875), (425, 51405), (447, 48875), (575, 37995), (745, 29325), (1173, 18625), (1275, 17135), (1725, 12665), (1955, 11175), (2125, 10281), (2235, 9775), (2533, 8625), (2875, 7599), (3427, 6375), (3725, 5865)]