217555380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{172663}}^1$

素因数の和:172685

約数の個数: 72

約数和(自身を含む): 754196352

約数和(自身を除く): 536640972

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, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 172663, 345326, 517989, 690652, 863315, 1035978, 1208641, 1553967, 1726630, 2071956, 2417282, 2589945, 3107934, 3453260, 3625923, 4834564, 5179890, 6043205, 6215868, 7251846, 7769835, 10359780, 10877769, 12086410, 14503692, 15539670, 18129615, 21755538, 24172820, 31079340, 36259230, 43511076, 54388845, 72518460, 108777690, 217555380]

約数ペア:

[(1, 217555380), (2, 108777690), (3, 72518460), (4, 54388845), (5, 43511076), (6, 36259230), (7, 31079340), (9, 24172820), (10, 21755538), (12, 18129615), (14, 15539670), (15, 14503692), (18, 12086410), (20, 10877769), (21, 10359780), (28, 7769835), (30, 7251846), (35, 6215868), (36, 6043205), (42, 5179890), (45, 4834564), (60, 3625923), (63, 3453260), (70, 3107934), (84, 2589945), (90, 2417282), (105, 2071956), (126, 1726630), (140, 1553967), (180, 1208641), (210, 1035978), (252, 863315), (315, 690652), (420, 517989), (630, 345326), (1260, 172663)]