289558750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:311

約数の個数: 80

約数和(自身を含む): 593584992

約数和(自身を除く): 304026242

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 103, 125, 130, 173, 206, 250, 325, 346, 515, 625, 650, 865, 1030, 1250, 1339, 1625, 1730, 2249, 2575, 2678, 3250, 4325, 4498, 5150, 6695, 8125, 8650, 11245, 12875, 13390, 16250, 17819, 21625, 22490, 25750, 33475, 35638, 43250, 56225, 64375, 66950, 89095, 108125, 112450, 128750, 167375, 178190, 216250, 231647, 281125, 334750, 445475, 463294, 562250, 836875, 890950, 1158235, 1405625, 1673750, 2227375, 2316470, 2811250, 4454750, 5791175, 11136875, 11582350, 22273750, 28955875, 57911750, 144779375, 289558750]

約数ペア:

[(1, 289558750), (2, 144779375), (5, 57911750), (10, 28955875), (13, 22273750), (25, 11582350), (26, 11136875), (50, 5791175), (65, 4454750), (103, 2811250), (125, 2316470), (130, 2227375), (173, 1673750), (206, 1405625), (250, 1158235), (325, 890950), (346, 836875), (515, 562250), (625, 463294), (650, 445475), (865, 334750), (1030, 281125), (1250, 231647), (1339, 216250), (1625, 178190), (1730, 167375), (2249, 128750), (2575, 112450), (2678, 108125), (3250, 89095), (4325, 66950), (4498, 64375), (5150, 56225), (6695, 43250), (8125, 35638), (8650, 33475), (11245, 25750), (12875, 22490), (13390, 21625), (16250, 17819)]