20121493428

素因数分解:

$2^2\times 3^2\times {\mathrm{61}}^1\times {\mathrm{1217}}^1\times {\mathrm{7529}}^1$

素因数の和:8817

約数の個数: 72

約数和(自身を含む): 51745828680

約数和(自身を除く): 31624335252

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 61, 122, 183, 244, 366, 549, 732, 1098, 1217, 2196, 2434, 3651, 4868, 7302, 7529, 10953, 14604, 15058, 21906, 22587, 30116, 43812, 45174, 67761, 74237, 90348, 135522, 148474, 222711, 271044, 296948, 445422, 459269, 668133, 890844, 918538, 1336266, 1377807, 1837076, 2672532, 2755614, 4133421, 5511228, 8266842, 9162793, 16533684, 18325586, 27488379, 36651172, 54976758, 82465137, 109953516, 164930274, 329860548, 558930373, 1117860746, 1676791119, 2235721492, 3353582238, 5030373357, 6707164476, 10060746714, 20121493428]

約数ペア:

[(1, 20121493428), (2, 10060746714), (3, 6707164476), (4, 5030373357), (6, 3353582238), (9, 2235721492), (12, 1676791119), (18, 1117860746), (36, 558930373), (61, 329860548), (122, 164930274), (183, 109953516), (244, 82465137), (366, 54976758), (549, 36651172), (732, 27488379), (1098, 18325586), (1217, 16533684), (2196, 9162793), (2434, 8266842), (3651, 5511228), (4868, 4133421), (7302, 2755614), (7529, 2672532), (10953, 1837076), (14604, 1377807), (15058, 1336266), (21906, 918538), (22587, 890844), (30116, 668133), (43812, 459269), (45174, 445422), (67761, 296948), (74237, 271044), (90348, 222711), (135522, 148474)]