20998425

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:127

約数の個数: 96

約数和(自身を含む): 43425792

約数和(自身を除く): 22427367

約数列:

[1, 3, 5, 7, 15, 21, 23, 25, 35, 37, 47, 69, 75, 105, 111, 115, 141, 161, 175, 185, 235, 259, 329, 345, 483, 525, 555, 575, 705, 777, 805, 851, 925, 987, 1081, 1175, 1295, 1645, 1725, 1739, 2415, 2553, 2775, 3243, 3525, 3885, 4025, 4255, 4935, 5217, 5405, 5957, 6475, 7567, 8225, 8695, 12075, 12173, 12765, 16215, 17871, 19425, 21275, 22701, 24675, 26085, 27025, 29785, 36519, 37835, 39997, 43475, 60865, 63825, 81075, 89355, 113505, 119991, 130425, 148925, 182595, 189175, 199985, 279979, 304325, 446775, 567525, 599955, 839937, 912975, 999925, 1399895, 2999775, 4199685, 6999475, 20998425]

約数ペア:

[(1, 20998425), (3, 6999475), (5, 4199685), (7, 2999775), (15, 1399895), (21, 999925), (23, 912975), (25, 839937), (35, 599955), (37, 567525), (47, 446775), (69, 304325), (75, 279979), (105, 199985), (111, 189175), (115, 182595), (141, 148925), (161, 130425), (175, 119991), (185, 113505), (235, 89355), (259, 81075), (329, 63825), (345, 60865), (483, 43475), (525, 39997), (555, 37835), (575, 36519), (705, 29785), (777, 27025), (805, 26085), (851, 24675), (925, 22701), (987, 21275), (1081, 19425), (1175, 17871), (1295, 16215), (1645, 12765), (1725, 12173), (1739, 12075), (2415, 8695), (2553, 8225), (2775, 7567), (3243, 6475), (3525, 5957), (3885, 5405), (4025, 5217), (4255, 4935)]