208771875

素因数分解:

$3^2\times 5^5\times {\mathrm{13}}^1\times {\mathrm{571}}^1$

素因数の和:615

約数の個数: 72

約数和(自身を含む): 406630224

約数和(自身を除く): 197858349

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 125, 195, 225, 325, 375, 571, 585, 625, 975, 1125, 1625, 1713, 1875, 2855, 2925, 3125, 4875, 5139, 5625, 7423, 8125, 8565, 9375, 14275, 14625, 22269, 24375, 25695, 28125, 37115, 40625, 42825, 66807, 71375, 73125, 111345, 121875, 128475, 185575, 214125, 334035, 356875, 365625, 556725, 642375, 927875, 1070625, 1670175, 1784375, 2783625, 3211875, 4639375, 5353125, 8350875, 13918125, 16059375, 23196875, 41754375, 69590625, 208771875]

約数ペア:

[(1, 208771875), (3, 69590625), (5, 41754375), (9, 23196875), (13, 16059375), (15, 13918125), (25, 8350875), (39, 5353125), (45, 4639375), (65, 3211875), (75, 2783625), (117, 1784375), (125, 1670175), (195, 1070625), (225, 927875), (325, 642375), (375, 556725), (571, 365625), (585, 356875), (625, 334035), (975, 214125), (1125, 185575), (1625, 128475), (1713, 121875), (1875, 111345), (2855, 73125), (2925, 71375), (3125, 66807), (4875, 42825), (5139, 40625), (5625, 37115), (7423, 28125), (8125, 25695), (8565, 24375), (9375, 22269), (14275, 14625)]