20173878920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1429}}^1\times {\mathrm{1597}}^1$

素因数の和:3067

約数の個数: 128

約数和(自身を含む): 51826975200

約数和(自身を除く): 31653096280

約数列:

[1, 2, 4, 5, 8, 10, 13, 17, 20, 26, 34, 40, 52, 65, 68, 85, 104, 130, 136, 170, 221, 260, 340, 442, 520, 680, 884, 1105, 1429, 1597, 1768, 2210, 2858, 3194, 4420, 5716, 6388, 7145, 7985, 8840, 11432, 12776, 14290, 15970, 18577, 20761, 24293, 27149, 28580, 31940, 37154, 41522, 48586, 54298, 57160, 63880, 74308, 83044, 92885, 97172, 103805, 108596, 121465, 135745, 148616, 166088, 185770, 194344, 207610, 217192, 242930, 271490, 315809, 352937, 371540, 415220, 485860, 542980, 631618, 705874, 743080, 830440, 971720, 1085960, 1263236, 1411748, 1579045, 1764685, 2282113, 2526472, 2823496, 3158090, 3529370, 4564226, 6316180, 7058740, 9128452, 11410565, 12632360, 14117480, 18256904, 22821130, 29667469, 38795921, 45642260, 59334938, 77591842, 91284520, 118669876, 148337345, 155183684, 193979605, 237339752, 296674690, 310367368, 387959210, 504346973, 593349380, 775918420, 1008693946, 1186698760, 1551836840, 2017387892, 2521734865, 4034775784, 5043469730, 10086939460, 20173878920]

約数ペア:

[(1, 20173878920), (2, 10086939460), (4, 5043469730), (5, 4034775784), (8, 2521734865), (10, 2017387892), (13, 1551836840), (17, 1186698760), (20, 1008693946), (26, 775918420), (34, 593349380), (40, 504346973), (52, 387959210), (65, 310367368), (68, 296674690), (85, 237339752), (104, 193979605), (130, 155183684), (136, 148337345), (170, 118669876), (221, 91284520), (260, 77591842), (340, 59334938), (442, 45642260), (520, 38795921), (680, 29667469), (884, 22821130), (1105, 18256904), (1429, 14117480), (1597, 12632360), (1768, 11410565), (2210, 9128452), (2858, 7058740), (3194, 6316180), (4420, 4564226), (5716, 3529370), (6388, 3158090), (7145, 2823496), (7985, 2526472), (8840, 2282113), (11432, 1764685), (12776, 1579045), (14290, 1411748), (15970, 1263236), (18577, 1085960), (20761, 971720), (24293, 830440), (27149, 743080), (28580, 705874), (31940, 631618), (37154, 542980), (41522, 485860), (48586, 415220), (54298, 371540), (57160, 352937), (63880, 315809), (74308, 271490), (83044, 242930), (92885, 217192), (97172, 207610), (103805, 194344), (108596, 185770), (121465, 166088), (135745, 148616)]