19959975

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1$

素因数の和:94

約数の個数: 144

約数和(自身を含む): 46425600

約数和(自身を除く): 26465625

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 23, 25, 29, 35, 45, 57, 63, 69, 75, 87, 95, 105, 115, 133, 145, 161, 171, 175, 203, 207, 225, 261, 285, 315, 345, 399, 435, 437, 475, 483, 525, 551, 575, 609, 665, 667, 725, 805, 855, 1015, 1035, 1197, 1305, 1311, 1425, 1449, 1575, 1653, 1725, 1827, 1995, 2001, 2175, 2185, 2415, 2755, 3045, 3059, 3325, 3335, 3857, 3933, 4025, 4275, 4669, 4959, 5075, 5175, 5985, 6003, 6525, 6555, 7245, 8265, 9135, 9177, 9975, 10005, 10925, 11571, 12075, 12673, 13775, 14007, 15225, 15295, 16675, 19285, 19665, 23345, 24795, 27531, 29925, 30015, 32775, 34713, 36225, 38019, 41325, 42021, 45675, 45885, 50025, 57855, 63365, 70035, 76475, 88711, 96425, 98325, 114057, 116725, 123975, 137655, 150075, 173565, 190095, 210105, 229425, 266133, 289275, 316825, 350175, 443555, 570285, 688275, 798399, 867825, 950475, 1050525, 1330665, 2217775, 2851425, 3991995, 6653325, 19959975]

約数ペア:

[(1, 19959975), (3, 6653325), (5, 3991995), (7, 2851425), (9, 2217775), (15, 1330665), (19, 1050525), (21, 950475), (23, 867825), (25, 798399), (29, 688275), (35, 570285), (45, 443555), (57, 350175), (63, 316825), (69, 289275), (75, 266133), (87, 229425), (95, 210105), (105, 190095), (115, 173565), (133, 150075), (145, 137655), (161, 123975), (171, 116725), (175, 114057), (203, 98325), (207, 96425), (225, 88711), (261, 76475), (285, 70035), (315, 63365), (345, 57855), (399, 50025), (435, 45885), (437, 45675), (475, 42021), (483, 41325), (525, 38019), (551, 36225), (575, 34713), (609, 32775), (665, 30015), (667, 29925), (725, 27531), (805, 24795), (855, 23345), (1015, 19665), (1035, 19285), (1197, 16675), (1305, 15295), (1311, 15225), (1425, 14007), (1449, 13775), (1575, 12673), (1653, 12075), (1725, 11571), (1827, 10925), (1995, 10005), (2001, 9975), (2175, 9177), (2185, 9135), (2415, 8265), (2755, 7245), (3045, 6555), (3059, 6525), (3325, 6003), (3335, 5985), (3857, 5175), (3933, 5075), (4025, 4959), (4275, 4669)]