21701820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{317}}^1$

素因数の和:499

約数の個数: 96

約数和(自身を含む): 70092288

約数和(自身を除く): 48390468

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 163, 210, 317, 326, 420, 489, 634, 652, 815, 951, 978, 1141, 1268, 1585, 1630, 1902, 1956, 2219, 2282, 2445, 3170, 3260, 3423, 3804, 4438, 4564, 4755, 4890, 5705, 6340, 6657, 6846, 8876, 9510, 9780, 11095, 11410, 13314, 13692, 17115, 19020, 22190, 22820, 26628, 33285, 34230, 44380, 51671, 66570, 68460, 103342, 133140, 155013, 206684, 258355, 310026, 361697, 516710, 620052, 723394, 775065, 1033420, 1085091, 1446788, 1550130, 1808485, 2170182, 3100260, 3616970, 4340364, 5425455, 7233940, 10850910, 21701820]

約数ペア:

[(1, 21701820), (2, 10850910), (3, 7233940), (4, 5425455), (5, 4340364), (6, 3616970), (7, 3100260), (10, 2170182), (12, 1808485), (14, 1550130), (15, 1446788), (20, 1085091), (21, 1033420), (28, 775065), (30, 723394), (35, 620052), (42, 516710), (60, 361697), (70, 310026), (84, 258355), (105, 206684), (140, 155013), (163, 133140), (210, 103342), (317, 68460), (326, 66570), (420, 51671), (489, 44380), (634, 34230), (652, 33285), (815, 26628), (951, 22820), (978, 22190), (1141, 19020), (1268, 17115), (1585, 13692), (1630, 13314), (1902, 11410), (1956, 11095), (2219, 9780), (2282, 9510), (2445, 8876), (3170, 6846), (3260, 6657), (3423, 6340), (3804, 5705), (4438, 4890), (4564, 4755)]