20153395875

素因数分解:

$3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1987}}^1$

素因数の和:2102

約数の個数: 128

約数和(自身を含む): 37334449152

約数和(自身を除く): 17181053277

約数列:

[1, 3, 5, 15, 17, 25, 37, 43, 51, 75, 85, 111, 125, 129, 185, 215, 255, 375, 425, 555, 629, 645, 731, 925, 1075, 1275, 1591, 1887, 1987, 2125, 2193, 2775, 3145, 3225, 3655, 4625, 4773, 5375, 5961, 6375, 7955, 9435, 9935, 10965, 13875, 15725, 16125, 18275, 23865, 27047, 29805, 33779, 39775, 47175, 49675, 54825, 73519, 78625, 81141, 85441, 91375, 101337, 119325, 135235, 149025, 168895, 198875, 220557, 235875, 248375, 256323, 274125, 367595, 405705, 427205, 506685, 596625, 676175, 745125, 844475, 1102785, 1249823, 1281615, 1452497, 1837975, 2028525, 2136025, 2533425, 3161317, 3380875, 3749469, 4222375, 4357491, 5513925, 6249115, 6408075, 7262485, 9189875, 9483951, 10142625, 10680125, 12667125, 15806585, 18747345, 21787455, 27569625, 31245575, 32040375, 36312425, 47419755, 53742389, 79032925, 93736725, 108937275, 156227875, 161227167, 181562125, 237098775, 268711945, 395164625, 468683625, 544686375, 806135835, 1185493875, 1343559725, 4030679175, 6717798625, 20153395875]

約数ペア:

[(1, 20153395875), (3, 6717798625), (5, 4030679175), (15, 1343559725), (17, 1185493875), (25, 806135835), (37, 544686375), (43, 468683625), (51, 395164625), (75, 268711945), (85, 237098775), (111, 181562125), (125, 161227167), (129, 156227875), (185, 108937275), (215, 93736725), (255, 79032925), (375, 53742389), (425, 47419755), (555, 36312425), (629, 32040375), (645, 31245575), (731, 27569625), (925, 21787455), (1075, 18747345), (1275, 15806585), (1591, 12667125), (1887, 10680125), (1987, 10142625), (2125, 9483951), (2193, 9189875), (2775, 7262485), (3145, 6408075), (3225, 6249115), (3655, 5513925), (4625, 4357491), (4773, 4222375), (5375, 3749469), (5961, 3380875), (6375, 3161317), (7955, 2533425), (9435, 2136025), (9935, 2028525), (10965, 1837975), (13875, 1452497), (15725, 1281615), (16125, 1249823), (18275, 1102785), (23865, 844475), (27047, 745125), (29805, 676175), (33779, 596625), (39775, 506685), (47175, 427205), (49675, 405705), (54825, 367595), (73519, 274125), (78625, 256323), (81141, 248375), (85441, 235875), (91375, 220557), (101337, 198875), (119325, 168895), (135235, 149025)]