213451520

素因数分解:

$2^8\times 5^1\times {\mathrm{37}}^1\times {\mathrm{4507}}^1$

素因数の和:4565

約数の個数: 72

約数和(自身を含む): 525218064

約数和(自身を除く): 311766544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 256, 296, 320, 370, 592, 640, 740, 1184, 1280, 1480, 2368, 2960, 4507, 4736, 5920, 9014, 9472, 11840, 18028, 22535, 23680, 36056, 45070, 47360, 72112, 90140, 144224, 166759, 180280, 288448, 333518, 360560, 576896, 667036, 721120, 833795, 1153792, 1334072, 1442240, 1667590, 2668144, 2884480, 3335180, 5336288, 5768960, 6670360, 10672576, 13340720, 21345152, 26681440, 42690304, 53362880, 106725760, 213451520]

約数ペア:

[(1, 213451520), (2, 106725760), (4, 53362880), (5, 42690304), (8, 26681440), (10, 21345152), (16, 13340720), (20, 10672576), (32, 6670360), (37, 5768960), (40, 5336288), (64, 3335180), (74, 2884480), (80, 2668144), (128, 1667590), (148, 1442240), (160, 1334072), (185, 1153792), (256, 833795), (296, 721120), (320, 667036), (370, 576896), (592, 360560), (640, 333518), (740, 288448), (1184, 180280), (1280, 166759), (1480, 144224), (2368, 90140), (2960, 72112), (4507, 47360), (4736, 45070), (5920, 36056), (9014, 23680), (9472, 22535), (11840, 18028)]