78720500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:198

約数の個数: 96

約数和(自身を含む): 182800800

約数和(自身を除く): 104080300

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 61, 89, 100, 116, 122, 125, 145, 178, 244, 250, 290, 305, 356, 445, 500, 580, 610, 725, 890, 1220, 1450, 1525, 1769, 1780, 2225, 2581, 2900, 3050, 3538, 3625, 4450, 5162, 5429, 6100, 7076, 7250, 7625, 8845, 8900, 10324, 10858, 11125, 12905, 14500, 15250, 17690, 21716, 22250, 25810, 27145, 30500, 35380, 44225, 44500, 51620, 54290, 64525, 88450, 108580, 129050, 135725, 157441, 176900, 221125, 258100, 271450, 314882, 322625, 442250, 542900, 629764, 645250, 678625, 787205, 884500, 1290500, 1357250, 1574410, 2714500, 3148820, 3936025, 7872050, 15744100, 19680125, 39360250, 78720500]

約数ペア:

[(1, 78720500), (2, 39360250), (4, 19680125), (5, 15744100), (10, 7872050), (20, 3936025), (25, 3148820), (29, 2714500), (50, 1574410), (58, 1357250), (61, 1290500), (89, 884500), (100, 787205), (116, 678625), (122, 645250), (125, 629764), (145, 542900), (178, 442250), (244, 322625), (250, 314882), (290, 271450), (305, 258100), (356, 221125), (445, 176900), (500, 157441), (580, 135725), (610, 129050), (725, 108580), (890, 88450), (1220, 64525), (1450, 54290), (1525, 51620), (1769, 44500), (1780, 44225), (2225, 35380), (2581, 30500), (2900, 27145), (3050, 25810), (3538, 22250), (3625, 21716), (4450, 17690), (5162, 15250), (5429, 14500), (6100, 12905), (7076, 11125), (7250, 10858), (7625, 10324), (8845, 8900)]