18278820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:274

約数の個数: 144

約数和(自身を含む): 64471680

約数和(自身を除く): 46192860

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 89, 90, 105, 126, 140, 163, 178, 180, 210, 252, 267, 315, 326, 356, 420, 445, 489, 534, 623, 630, 652, 801, 815, 890, 978, 1068, 1141, 1246, 1260, 1335, 1467, 1602, 1630, 1780, 1869, 1956, 2282, 2445, 2492, 2670, 2934, 3115, 3204, 3260, 3423, 3738, 4005, 4564, 4890, 5340, 5607, 5705, 5868, 6230, 6846, 7335, 7476, 8010, 9345, 9780, 10269, 11214, 11410, 12460, 13692, 14507, 14670, 16020, 17115, 18690, 20538, 22428, 22820, 28035, 29014, 29340, 34230, 37380, 41076, 43521, 51345, 56070, 58028, 68460, 72535, 87042, 101549, 102690, 112140, 130563, 145070, 174084, 203098, 205380, 217605, 261126, 290140, 304647, 406196, 435210, 507745, 522252, 609294, 652815, 870420, 913941, 1015490, 1218588, 1305630, 1523235, 1827882, 2030980, 2611260, 3046470, 3655764, 4569705, 6092940, 9139410, 18278820]

約数ペア:

[(1, 18278820), (2, 9139410), (3, 6092940), (4, 4569705), (5, 3655764), (6, 3046470), (7, 2611260), (9, 2030980), (10, 1827882), (12, 1523235), (14, 1305630), (15, 1218588), (18, 1015490), (20, 913941), (21, 870420), (28, 652815), (30, 609294), (35, 522252), (36, 507745), (42, 435210), (45, 406196), (60, 304647), (63, 290140), (70, 261126), (84, 217605), (89, 205380), (90, 203098), (105, 174084), (126, 145070), (140, 130563), (163, 112140), (178, 102690), (180, 101549), (210, 87042), (252, 72535), (267, 68460), (315, 58028), (326, 56070), (356, 51345), (420, 43521), (445, 41076), (489, 37380), (534, 34230), (623, 29340), (630, 29014), (652, 28035), (801, 22820), (815, 22428), (890, 20538), (978, 18690), (1068, 17115), (1141, 16020), (1246, 14670), (1260, 14507), (1335, 13692), (1467, 12460), (1602, 11410), (1630, 11214), (1780, 10269), (1869, 9780), (1956, 9345), (2282, 8010), (2445, 7476), (2492, 7335), (2670, 6846), (2934, 6230), (3115, 5868), (3204, 5705), (3260, 5607), (3423, 5340), (3738, 4890), (4005, 4564)]