21888860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{541}}^1$

素因数の和:591

約数の個数: 72

約数和(自身を含む): 55908384

約数和(自身を除く): 34019524

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 289, 340, 476, 541, 578, 595, 1082, 1156, 1190, 1445, 2023, 2164, 2380, 2705, 2890, 3787, 4046, 5410, 5780, 7574, 8092, 9197, 10115, 10820, 15148, 18394, 18935, 20230, 36788, 37870, 40460, 45985, 64379, 75740, 91970, 128758, 156349, 183940, 257516, 312698, 321895, 625396, 643790, 781745, 1094443, 1287580, 1563490, 2188886, 3126980, 4377772, 5472215, 10944430, 21888860]

約数ペア:

[(1, 21888860), (2, 10944430), (4, 5472215), (5, 4377772), (7, 3126980), (10, 2188886), (14, 1563490), (17, 1287580), (20, 1094443), (28, 781745), (34, 643790), (35, 625396), (68, 321895), (70, 312698), (85, 257516), (119, 183940), (140, 156349), (170, 128758), (238, 91970), (289, 75740), (340, 64379), (476, 45985), (541, 40460), (578, 37870), (595, 36788), (1082, 20230), (1156, 18935), (1190, 18394), (1445, 15148), (2023, 10820), (2164, 10115), (2380, 9197), (2705, 8092), (2890, 7574), (3787, 5780), (4046, 5410)]