20047360

素因数分解:

$2^9\times 5^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:255

約数の個数: 80

約数和(自身を含む): 49496832

約数和(自身を除く): 29449472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 64, 80, 82, 128, 160, 164, 191, 205, 256, 320, 328, 382, 410, 512, 640, 656, 764, 820, 955, 1280, 1312, 1528, 1640, 1910, 2560, 2624, 3056, 3280, 3820, 5248, 6112, 6560, 7640, 7831, 10496, 12224, 13120, 15280, 15662, 20992, 24448, 26240, 30560, 31324, 39155, 48896, 52480, 61120, 62648, 78310, 97792, 104960, 122240, 125296, 156620, 244480, 250592, 313240, 488960, 501184, 626480, 1002368, 1252960, 2004736, 2505920, 4009472, 5011840, 10023680, 20047360]

約数ペア:

[(1, 20047360), (2, 10023680), (4, 5011840), (5, 4009472), (8, 2505920), (10, 2004736), (16, 1252960), (20, 1002368), (32, 626480), (40, 501184), (41, 488960), (64, 313240), (80, 250592), (82, 244480), (128, 156620), (160, 125296), (164, 122240), (191, 104960), (205, 97792), (256, 78310), (320, 62648), (328, 61120), (382, 52480), (410, 48896), (512, 39155), (640, 31324), (656, 30560), (764, 26240), (820, 24448), (955, 20992), (1280, 15662), (1312, 15280), (1528, 13120), (1640, 12224), (1910, 10496), (2560, 7831), (2624, 7640), (3056, 6560), (3280, 6112), (3820, 5248)]