20860425

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 40622400

約数和(自身を除く): 19761975

約数列:

[1, 3, 5, 9, 15, 23, 25, 29, 45, 69, 75, 87, 115, 139, 145, 207, 225, 261, 345, 417, 435, 575, 667, 695, 725, 1035, 1251, 1305, 1725, 2001, 2085, 2175, 3197, 3335, 3475, 4031, 5175, 6003, 6255, 6525, 9591, 10005, 10425, 12093, 15985, 16675, 20155, 28773, 30015, 31275, 36279, 47955, 50025, 60465, 79925, 92713, 100775, 143865, 150075, 181395, 239775, 278139, 302325, 463565, 719325, 834417, 906975, 1390695, 2317825, 4172085, 6953475, 20860425]

約数ペア:

[(1, 20860425), (3, 6953475), (5, 4172085), (9, 2317825), (15, 1390695), (23, 906975), (25, 834417), (29, 719325), (45, 463565), (69, 302325), (75, 278139), (87, 239775), (115, 181395), (139, 150075), (145, 143865), (207, 100775), (225, 92713), (261, 79925), (345, 60465), (417, 50025), (435, 47955), (575, 36279), (667, 31275), (695, 30015), (725, 28773), (1035, 20155), (1251, 16675), (1305, 15985), (1725, 12093), (2001, 10425), (2085, 10005), (2175, 9591), (3197, 6525), (3335, 6255), (3475, 6003), (4031, 5175)]