20235780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{389}}^1$

素因数の和:438

約数の個数: 108

約数和(自身を含む): 65372580

約数和(自身を除く): 45136800

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 289, 306, 340, 389, 510, 578, 612, 765, 778, 867, 1020, 1156, 1167, 1445, 1530, 1556, 1734, 1945, 2334, 2601, 2890, 3060, 3468, 3501, 3890, 4335, 4668, 5202, 5780, 5835, 6613, 7002, 7780, 8670, 10404, 11670, 13005, 13226, 14004, 17340, 17505, 19839, 23340, 26010, 26452, 33065, 35010, 39678, 52020, 59517, 66130, 70020, 79356, 99195, 112421, 119034, 132260, 198390, 224842, 238068, 297585, 337263, 396780, 449684, 562105, 595170, 674526, 1011789, 1124210, 1190340, 1349052, 1686315, 2023578, 2248420, 3372630, 4047156, 5058945, 6745260, 10117890, 20235780]

約数ペア:

[(1, 20235780), (2, 10117890), (3, 6745260), (4, 5058945), (5, 4047156), (6, 3372630), (9, 2248420), (10, 2023578), (12, 1686315), (15, 1349052), (17, 1190340), (18, 1124210), (20, 1011789), (30, 674526), (34, 595170), (36, 562105), (45, 449684), (51, 396780), (60, 337263), (68, 297585), (85, 238068), (90, 224842), (102, 198390), (153, 132260), (170, 119034), (180, 112421), (204, 99195), (255, 79356), (289, 70020), (306, 66130), (340, 59517), (389, 52020), (510, 39678), (578, 35010), (612, 33065), (765, 26452), (778, 26010), (867, 23340), (1020, 19839), (1156, 17505), (1167, 17340), (1445, 14004), (1530, 13226), (1556, 13005), (1734, 11670), (1945, 10404), (2334, 8670), (2601, 7780), (2890, 7002), (3060, 6613), (3468, 5835), (3501, 5780), (3890, 5202), (4335, 4668)]