618897500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:313

約数の個数: 120

約数和(自身を含む): 1478714160

約数和(自身を除く): 859816660

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 137, 139, 250, 260, 274, 278, 325, 500, 548, 556, 625, 650, 685, 695, 1250, 1300, 1370, 1390, 1625, 1781, 1807, 2500, 2740, 2780, 3250, 3425, 3475, 3562, 3614, 6500, 6850, 6950, 7124, 7228, 8125, 8905, 9035, 13700, 13900, 16250, 17125, 17375, 17810, 18070, 19043, 32500, 34250, 34750, 35620, 36140, 38086, 44525, 45175, 68500, 69500, 76172, 85625, 86875, 89050, 90350, 95215, 171250, 173750, 178100, 180700, 190430, 222625, 225875, 247559, 342500, 347500, 380860, 445250, 451750, 476075, 495118, 890500, 903500, 952150, 990236, 1113125, 1129375, 1237795, 1904300, 2226250, 2258750, 2380375, 2475590, 4452500, 4517500, 4760750, 4951180, 6188975, 9521500, 11901875, 12377950, 23803750, 24755900, 30944875, 47607500, 61889750, 123779500, 154724375, 309448750, 618897500]

約数ペア:

[(1, 618897500), (2, 309448750), (4, 154724375), (5, 123779500), (10, 61889750), (13, 47607500), (20, 30944875), (25, 24755900), (26, 23803750), (50, 12377950), (52, 11901875), (65, 9521500), (100, 6188975), (125, 4951180), (130, 4760750), (137, 4517500), (139, 4452500), (250, 2475590), (260, 2380375), (274, 2258750), (278, 2226250), (325, 1904300), (500, 1237795), (548, 1129375), (556, 1113125), (625, 990236), (650, 952150), (685, 903500), (695, 890500), (1250, 495118), (1300, 476075), (1370, 451750), (1390, 445250), (1625, 380860), (1781, 347500), (1807, 342500), (2500, 247559), (2740, 225875), (2780, 222625), (3250, 190430), (3425, 180700), (3475, 178100), (3562, 173750), (3614, 171250), (6500, 95215), (6850, 90350), (6950, 89050), (7124, 86875), (7228, 85625), (8125, 76172), (8905, 69500), (9035, 68500), (13700, 45175), (13900, 44525), (16250, 38086), (17125, 36140), (17375, 35620), (17810, 34750), (18070, 34250), (19043, 32500)]