20903670

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:347

約数の個数: 80

約数和(自身を含む): 56924208

約数和(自身を除く): 36020538

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 131, 135, 162, 197, 262, 270, 393, 394, 405, 591, 655, 786, 810, 985, 1179, 1182, 1310, 1773, 1965, 1970, 2358, 2955, 3537, 3546, 3930, 5319, 5895, 5910, 7074, 8865, 10611, 10638, 11790, 15957, 17685, 17730, 21222, 25807, 26595, 31914, 35370, 51614, 53055, 53190, 77421, 79785, 106110, 129035, 154842, 159570, 232263, 258070, 387105, 464526, 696789, 774210, 1161315, 1393578, 2090367, 2322630, 3483945, 4180734, 6967890, 10451835, 20903670]

約数ペア:

[(1, 20903670), (2, 10451835), (3, 6967890), (5, 4180734), (6, 3483945), (9, 2322630), (10, 2090367), (15, 1393578), (18, 1161315), (27, 774210), (30, 696789), (45, 464526), (54, 387105), (81, 258070), (90, 232263), (131, 159570), (135, 154842), (162, 129035), (197, 106110), (262, 79785), (270, 77421), (393, 53190), (394, 53055), (405, 51614), (591, 35370), (655, 31914), (786, 26595), (810, 25807), (985, 21222), (1179, 17730), (1182, 17685), (1310, 15957), (1773, 11790), (1965, 10638), (1970, 10611), (2358, 8865), (2955, 7074), (3537, 5910), (3546, 5895), (3930, 5319)]