309448750

素因数分解:

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

素因数の和:311

約数の個数: 80

約数和(自身を含む): 633734640

約数和(自身を除く): 324285890

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 137, 139, 250, 274, 278, 325, 625, 650, 685, 695, 1250, 1370, 1390, 1625, 1781, 1807, 3250, 3425, 3475, 3562, 3614, 6850, 6950, 8125, 8905, 9035, 16250, 17125, 17375, 17810, 18070, 19043, 34250, 34750, 38086, 44525, 45175, 85625, 86875, 89050, 90350, 95215, 171250, 173750, 190430, 222625, 225875, 247559, 445250, 451750, 476075, 495118, 952150, 1113125, 1129375, 1237795, 2226250, 2258750, 2380375, 2475590, 4760750, 6188975, 11901875, 12377950, 23803750, 30944875, 61889750, 154724375, 309448750]

約数ペア:

[(1, 309448750), (2, 154724375), (5, 61889750), (10, 30944875), (13, 23803750), (25, 12377950), (26, 11901875), (50, 6188975), (65, 4760750), (125, 2475590), (130, 2380375), (137, 2258750), (139, 2226250), (250, 1237795), (274, 1129375), (278, 1113125), (325, 952150), (625, 495118), (650, 476075), (685, 451750), (695, 445250), (1250, 247559), (1370, 225875), (1390, 222625), (1625, 190430), (1781, 173750), (1807, 171250), (3250, 95215), (3425, 90350), (3475, 89050), (3562, 86875), (3614, 85625), (6850, 45175), (6950, 44525), (8125, 38086), (8905, 34750), (9035, 34250), (16250, 19043), (17125, 18070), (17375, 17810)]