25420000

素因数分解:

$2^5\times 5^4\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:102

約数の個数: 120

約数和(自身を含む): 66128832

約数和(自身を除く): 40708832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 41, 50, 62, 80, 82, 100, 124, 125, 155, 160, 164, 200, 205, 248, 250, 310, 328, 400, 410, 496, 500, 620, 625, 656, 775, 800, 820, 992, 1000, 1025, 1240, 1250, 1271, 1312, 1550, 1640, 2000, 2050, 2480, 2500, 2542, 3100, 3280, 3875, 4000, 4100, 4960, 5000, 5084, 5125, 6200, 6355, 6560, 7750, 8200, 10000, 10168, 10250, 12400, 12710, 15500, 16400, 19375, 20000, 20336, 20500, 24800, 25420, 25625, 31000, 31775, 32800, 38750, 40672, 41000, 50840, 51250, 62000, 63550, 77500, 82000, 101680, 102500, 124000, 127100, 155000, 158875, 164000, 203360, 205000, 254200, 310000, 317750, 410000, 508400, 620000, 635500, 794375, 820000, 1016800, 1271000, 1588750, 2542000, 3177500, 5084000, 6355000, 12710000, 25420000]

約数ペア:

[(1, 25420000), (2, 12710000), (4, 6355000), (5, 5084000), (8, 3177500), (10, 2542000), (16, 1588750), (20, 1271000), (25, 1016800), (31, 820000), (32, 794375), (40, 635500), (41, 620000), (50, 508400), (62, 410000), (80, 317750), (82, 310000), (100, 254200), (124, 205000), (125, 203360), (155, 164000), (160, 158875), (164, 155000), (200, 127100), (205, 124000), (248, 102500), (250, 101680), (310, 82000), (328, 77500), (400, 63550), (410, 62000), (496, 51250), (500, 50840), (620, 41000), (625, 40672), (656, 38750), (775, 32800), (800, 31775), (820, 31000), (992, 25625), (1000, 25420), (1025, 24800), (1240, 20500), (1250, 20336), (1271, 20000), (1312, 19375), (1550, 16400), (1640, 15500), (2000, 12710), (2050, 12400), (2480, 10250), (2500, 10168), (2542, 10000), (3100, 8200), (3280, 7750), (3875, 6560), (4000, 6355), (4100, 6200), (4960, 5125), (5000, 5084)]