20189439440

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{80603}}^1$

素因数の和:80748

約数の個数: 80

約数和(自身を含む): 48935010816

約数和(自身を除く): 28745571376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 101, 124, 155, 202, 248, 310, 404, 496, 505, 620, 808, 1010, 1240, 1616, 2020, 2480, 3131, 4040, 6262, 8080, 12524, 15655, 25048, 31310, 50096, 62620, 80603, 125240, 161206, 250480, 322412, 403015, 644824, 806030, 1289648, 1612060, 2498693, 3224120, 4997386, 6448240, 8140903, 9994772, 12493465, 16281806, 19989544, 24986930, 32563612, 39979088, 40704515, 49973860, 65127224, 81409030, 99947720, 130254448, 162818060, 199895440, 252367993, 325636120, 504735986, 651272240, 1009471972, 1261839965, 2018943944, 2523679930, 4037887888, 5047359860, 10094719720, 20189439440]

約数ペア:

[(1, 20189439440), (2, 10094719720), (4, 5047359860), (5, 4037887888), (8, 2523679930), (10, 2018943944), (16, 1261839965), (20, 1009471972), (31, 651272240), (40, 504735986), (62, 325636120), (80, 252367993), (101, 199895440), (124, 162818060), (155, 130254448), (202, 99947720), (248, 81409030), (310, 65127224), (404, 49973860), (496, 40704515), (505, 39979088), (620, 32563612), (808, 24986930), (1010, 19989544), (1240, 16281806), (1616, 12493465), (2020, 9994772), (2480, 8140903), (3131, 6448240), (4040, 4997386), (6262, 3224120), (8080, 2498693), (12524, 1612060), (15655, 1289648), (25048, 806030), (31310, 644824), (50096, 403015), (62620, 322412), (80603, 250480), (125240, 161206)]