639604875

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{18743}}^1$

素因数の和:18781

約数の個数: 64

約数和(自身を含む): 1309980672

約数和(自身を除く): 670375797

約数列:

[1, 3, 5, 7, 13, 15, 21, 25, 35, 39, 65, 75, 91, 105, 125, 175, 195, 273, 325, 375, 455, 525, 875, 975, 1365, 1625, 2275, 2625, 4875, 6825, 11375, 18743, 34125, 56229, 93715, 131201, 243659, 281145, 393603, 468575, 656005, 730977, 1218295, 1405725, 1705613, 1968015, 2342875, 3280025, 3654885, 5116839, 6091475, 7028625, 8528065, 9840075, 16400125, 18274425, 25584195, 30457375, 42640325, 49200375, 91372125, 127920975, 213201625, 639604875]

約数ペア:

[(1, 639604875), (3, 213201625), (5, 127920975), (7, 91372125), (13, 49200375), (15, 42640325), (21, 30457375), (25, 25584195), (35, 18274425), (39, 16400125), (65, 9840075), (75, 8528065), (91, 7028625), (105, 6091475), (125, 5116839), (175, 3654885), (195, 3280025), (273, 2342875), (325, 1968015), (375, 1705613), (455, 1405725), (525, 1218295), (875, 730977), (975, 656005), (1365, 468575), (1625, 393603), (2275, 281145), (2625, 243659), (4875, 131201), (6825, 93715), (11375, 56229), (18743, 34125)]