21099780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:226

約数の個数: 144

約数和(自身を含む): 70447104

約数和(自身を除く): 49347324

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 71, 78, 90, 117, 127, 130, 142, 156, 180, 195, 213, 234, 254, 260, 284, 355, 381, 390, 426, 468, 508, 585, 635, 639, 710, 762, 780, 852, 923, 1065, 1143, 1170, 1270, 1278, 1420, 1524, 1651, 1846, 1905, 2130, 2286, 2340, 2540, 2556, 2769, 3195, 3302, 3692, 3810, 4260, 4572, 4615, 4953, 5538, 5715, 6390, 6604, 7620, 8255, 8307, 9017, 9230, 9906, 11076, 11430, 12780, 13845, 14859, 16510, 16614, 18034, 18460, 19812, 22860, 24765, 27051, 27690, 29718, 33020, 33228, 36068, 41535, 45085, 49530, 54102, 55380, 59436, 74295, 81153, 83070, 90170, 99060, 108204, 117221, 135255, 148590, 162306, 166140, 180340, 234442, 270510, 297180, 324612, 351663, 405765, 468884, 541020, 586105, 703326, 811530, 1054989, 1172210, 1406652, 1623060, 1758315, 2109978, 2344420, 3516630, 4219956, 5274945, 7033260, 10549890, 21099780]

約数ペア:

[(1, 21099780), (2, 10549890), (3, 7033260), (4, 5274945), (5, 4219956), (6, 3516630), (9, 2344420), (10, 2109978), (12, 1758315), (13, 1623060), (15, 1406652), (18, 1172210), (20, 1054989), (26, 811530), (30, 703326), (36, 586105), (39, 541020), (45, 468884), (52, 405765), (60, 351663), (65, 324612), (71, 297180), (78, 270510), (90, 234442), (117, 180340), (127, 166140), (130, 162306), (142, 148590), (156, 135255), (180, 117221), (195, 108204), (213, 99060), (234, 90170), (254, 83070), (260, 81153), (284, 74295), (355, 59436), (381, 55380), (390, 54102), (426, 49530), (468, 45085), (508, 41535), (585, 36068), (635, 33228), (639, 33020), (710, 29718), (762, 27690), (780, 27051), (852, 24765), (923, 22860), (1065, 19812), (1143, 18460), (1170, 18034), (1270, 16614), (1278, 16510), (1420, 14859), (1524, 13845), (1651, 12780), (1846, 11430), (1905, 11076), (2130, 9906), (2286, 9230), (2340, 9017), (2540, 8307), (2556, 8255), (2769, 7620), (3195, 6604), (3302, 6390), (3692, 5715), (3810, 5538), (4260, 4953), (4572, 4615)]