78370000

素因数分解:

$2^4\times 5^4\times {\mathrm{17}}^1\times {\mathrm{461}}^1$

素因数の和:506

約数の個数: 100

約数和(自身を含む): 201338676

約数和(自身を除く): 122968676

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 125, 136, 170, 200, 250, 272, 340, 400, 425, 461, 500, 625, 680, 850, 922, 1000, 1250, 1360, 1700, 1844, 2000, 2125, 2305, 2500, 3400, 3688, 4250, 4610, 5000, 6800, 7376, 7837, 8500, 9220, 10000, 10625, 11525, 15674, 17000, 18440, 21250, 23050, 31348, 34000, 36880, 39185, 42500, 46100, 57625, 62696, 78370, 85000, 92200, 115250, 125392, 156740, 170000, 184400, 195925, 230500, 288125, 313480, 391850, 461000, 576250, 626960, 783700, 922000, 979625, 1152500, 1567400, 1959250, 2305000, 3134800, 3918500, 4610000, 4898125, 7837000, 9796250, 15674000, 19592500, 39185000, 78370000]

約数ペア:

[(1, 78370000), (2, 39185000), (4, 19592500), (5, 15674000), (8, 9796250), (10, 7837000), (16, 4898125), (17, 4610000), (20, 3918500), (25, 3134800), (34, 2305000), (40, 1959250), (50, 1567400), (68, 1152500), (80, 979625), (85, 922000), (100, 783700), (125, 626960), (136, 576250), (170, 461000), (200, 391850), (250, 313480), (272, 288125), (340, 230500), (400, 195925), (425, 184400), (461, 170000), (500, 156740), (625, 125392), (680, 115250), (850, 92200), (922, 85000), (1000, 78370), (1250, 62696), (1360, 57625), (1700, 46100), (1844, 42500), (2000, 39185), (2125, 36880), (2305, 34000), (2500, 31348), (3400, 23050), (3688, 21250), (4250, 18440), (4610, 17000), (5000, 15674), (6800, 11525), (7376, 10625), (7837, 10000), (8500, 9220)]