320821920

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{222793}}^1$

素因数の和:222814

約数の個数: 72

約数和(自身を含む): 1094809716

約数和(自身を除く): 773987796

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 222793, 445586, 668379, 891172, 1113965, 1336758, 1782344, 2005137, 2227930, 2673516, 3341895, 3564688, 4010274, 4455860, 5347032, 6683790, 7129376, 8020548, 8911720, 10025685, 10694064, 13367580, 16041096, 17823440, 20051370, 21388128, 26735160, 32082192, 35646880, 40102740, 53470320, 64164384, 80205480, 106940640, 160410960, 320821920]

約数ペア:

[(1, 320821920), (2, 160410960), (3, 106940640), (4, 80205480), (5, 64164384), (6, 53470320), (8, 40102740), (9, 35646880), (10, 32082192), (12, 26735160), (15, 21388128), (16, 20051370), (18, 17823440), (20, 16041096), (24, 13367580), (30, 10694064), (32, 10025685), (36, 8911720), (40, 8020548), (45, 7129376), (48, 6683790), (60, 5347032), (72, 4455860), (80, 4010274), (90, 3564688), (96, 3341895), (120, 2673516), (144, 2227930), (160, 2005137), (180, 1782344), (240, 1336758), (288, 1113965), (360, 891172), (480, 668379), (720, 445586), (1440, 222793)]