31579380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:446

約数の個数: 144

約数和(自身を含む): 111331584

約数和(自身を除く): 79752204

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 71, 84, 90, 105, 126, 140, 142, 180, 210, 213, 252, 284, 315, 353, 355, 420, 426, 497, 630, 639, 706, 710, 852, 994, 1059, 1065, 1260, 1278, 1412, 1420, 1491, 1765, 1988, 2118, 2130, 2471, 2485, 2556, 2982, 3177, 3195, 3530, 4236, 4260, 4473, 4942, 4970, 5295, 5964, 6354, 6390, 7060, 7413, 7455, 8946, 9884, 9940, 10590, 12355, 12708, 12780, 14826, 14910, 15885, 17892, 21180, 22239, 22365, 24710, 25063, 29652, 29820, 31770, 37065, 44478, 44730, 49420, 50126, 63540, 74130, 75189, 88956, 89460, 100252, 111195, 125315, 148260, 150378, 175441, 222390, 225567, 250630, 300756, 350882, 375945, 444780, 451134, 501260, 526323, 701764, 751890, 877205, 902268, 1052646, 1127835, 1503780, 1578969, 1754410, 2105292, 2255670, 2631615, 3157938, 3508820, 4511340, 5263230, 6315876, 7894845, 10526460, 15789690, 31579380]

約数ペア:

[(1, 31579380), (2, 15789690), (3, 10526460), (4, 7894845), (5, 6315876), (6, 5263230), (7, 4511340), (9, 3508820), (10, 3157938), (12, 2631615), (14, 2255670), (15, 2105292), (18, 1754410), (20, 1578969), (21, 1503780), (28, 1127835), (30, 1052646), (35, 902268), (36, 877205), (42, 751890), (45, 701764), (60, 526323), (63, 501260), (70, 451134), (71, 444780), (84, 375945), (90, 350882), (105, 300756), (126, 250630), (140, 225567), (142, 222390), (180, 175441), (210, 150378), (213, 148260), (252, 125315), (284, 111195), (315, 100252), (353, 89460), (355, 88956), (420, 75189), (426, 74130), (497, 63540), (630, 50126), (639, 49420), (706, 44730), (710, 44478), (852, 37065), (994, 31770), (1059, 29820), (1065, 29652), (1260, 25063), (1278, 24710), (1412, 22365), (1420, 22239), (1491, 21180), (1765, 17892), (1988, 15885), (2118, 14910), (2130, 14826), (2471, 12780), (2485, 12708), (2556, 12355), (2982, 10590), (3177, 9940), (3195, 9884), (3530, 8946), (4236, 7455), (4260, 7413), (4473, 7060), (4942, 6390), (4970, 6354), (5295, 5964)]