208020825

素因数分解:

$3^3\times 5^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:228

約数の個数: 96

約数和(自身を含む): 399974400

約数和(自身を除く): 191953575

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 47, 75, 79, 83, 135, 141, 225, 235, 237, 249, 395, 415, 423, 675, 705, 711, 747, 1175, 1185, 1245, 1269, 1975, 2075, 2115, 2133, 2241, 3525, 3555, 3713, 3735, 3901, 5925, 6225, 6345, 6557, 10575, 10665, 11139, 11205, 11703, 17775, 18565, 18675, 19505, 19671, 31725, 32785, 33417, 35109, 53325, 55695, 56025, 58515, 59013, 92825, 97525, 98355, 100251, 105327, 163925, 167085, 175545, 177039, 278475, 292575, 295065, 308179, 491775, 501255, 526635, 835425, 877725, 885195, 924537, 1475325, 1540895, 2506275, 2633175, 2773611, 4425975, 4622685, 7704475, 8320833, 13868055, 23113425, 41604165, 69340275, 208020825]

約数ペア:

[(1, 208020825), (3, 69340275), (5, 41604165), (9, 23113425), (15, 13868055), (25, 8320833), (27, 7704475), (45, 4622685), (47, 4425975), (75, 2773611), (79, 2633175), (83, 2506275), (135, 1540895), (141, 1475325), (225, 924537), (235, 885195), (237, 877725), (249, 835425), (395, 526635), (415, 501255), (423, 491775), (675, 308179), (705, 295065), (711, 292575), (747, 278475), (1175, 177039), (1185, 175545), (1245, 167085), (1269, 163925), (1975, 105327), (2075, 100251), (2115, 98355), (2133, 97525), (2241, 92825), (3525, 59013), (3555, 58515), (3713, 56025), (3735, 55695), (3901, 53325), (5925, 35109), (6225, 33417), (6345, 32785), (6557, 31725), (10575, 19671), (10665, 19505), (11139, 18675), (11205, 18565), (11703, 17775)]