205719720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{3253}}^1$

素因数の和:3315

約数の個数: 128

約数和(自身を含む): 674749440

約数和(自身を除く): 469029720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 31, 34, 40, 51, 60, 62, 68, 85, 93, 102, 120, 124, 136, 155, 170, 186, 204, 248, 255, 310, 340, 372, 408, 465, 510, 527, 620, 680, 744, 930, 1020, 1054, 1240, 1581, 1860, 2040, 2108, 2635, 3162, 3253, 3720, 4216, 5270, 6324, 6506, 7905, 9759, 10540, 12648, 13012, 15810, 16265, 19518, 21080, 26024, 31620, 32530, 39036, 48795, 55301, 63240, 65060, 78072, 97590, 100843, 110602, 130120, 165903, 195180, 201686, 221204, 276505, 302529, 331806, 390360, 403372, 442408, 504215, 553010, 605058, 663612, 806744, 829515, 1008430, 1106020, 1210116, 1327224, 1512645, 1659030, 1714331, 2016860, 2212040, 2420232, 3025290, 3318060, 3428662, 4033720, 5142993, 6050580, 6636120, 6857324, 8571655, 10285986, 12101160, 13714648, 17143310, 20571972, 25714965, 34286620, 41143944, 51429930, 68573240, 102859860, 205719720]

約数ペア:

[(1, 205719720), (2, 102859860), (3, 68573240), (4, 51429930), (5, 41143944), (6, 34286620), (8, 25714965), (10, 20571972), (12, 17143310), (15, 13714648), (17, 12101160), (20, 10285986), (24, 8571655), (30, 6857324), (31, 6636120), (34, 6050580), (40, 5142993), (51, 4033720), (60, 3428662), (62, 3318060), (68, 3025290), (85, 2420232), (93, 2212040), (102, 2016860), (120, 1714331), (124, 1659030), (136, 1512645), (155, 1327224), (170, 1210116), (186, 1106020), (204, 1008430), (248, 829515), (255, 806744), (310, 663612), (340, 605058), (372, 553010), (408, 504215), (465, 442408), (510, 403372), (527, 390360), (620, 331806), (680, 302529), (744, 276505), (930, 221204), (1020, 201686), (1054, 195180), (1240, 165903), (1581, 130120), (1860, 110602), (2040, 100843), (2108, 97590), (2635, 78072), (3162, 65060), (3253, 63240), (3720, 55301), (4216, 48795), (5270, 39036), (6324, 32530), (6506, 31620), (7905, 26024), (9759, 21080), (10540, 19518), (12648, 16265), (13012, 15810)]