81218340

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{883}}^1$

素因数の和:978

約数の個数: 144

約数和(自身を含む): 285737088

約数和(自身を除く): 204518748

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, 73, 84, 90, 105, 126, 140, 146, 180, 210, 219, 252, 292, 315, 365, 420, 438, 511, 630, 657, 730, 876, 883, 1022, 1095, 1260, 1314, 1460, 1533, 1766, 2044, 2190, 2555, 2628, 2649, 3066, 3285, 3532, 4380, 4415, 4599, 5110, 5298, 6132, 6181, 6570, 7665, 7947, 8830, 9198, 10220, 10596, 12362, 13140, 13245, 15330, 15894, 17660, 18396, 18543, 22995, 24724, 26490, 30660, 30905, 31788, 37086, 39735, 45990, 52980, 55629, 61810, 64459, 74172, 79470, 91980, 92715, 111258, 123620, 128918, 158940, 185430, 193377, 222516, 257836, 278145, 322295, 370860, 386754, 451213, 556290, 580131, 644590, 773508, 902426, 966885, 1112580, 1160262, 1289180, 1353639, 1804852, 1933770, 2256065, 2320524, 2707278, 2900655, 3867540, 4060917, 4512130, 5414556, 5801310, 6768195, 8121834, 9024260, 11602620, 13536390, 16243668, 20304585, 27072780, 40609170, 81218340]

約数ペア:

[(1, 81218340), (2, 40609170), (3, 27072780), (4, 20304585), (5, 16243668), (6, 13536390), (7, 11602620), (9, 9024260), (10, 8121834), (12, 6768195), (14, 5801310), (15, 5414556), (18, 4512130), (20, 4060917), (21, 3867540), (28, 2900655), (30, 2707278), (35, 2320524), (36, 2256065), (42, 1933770), (45, 1804852), (60, 1353639), (63, 1289180), (70, 1160262), (73, 1112580), (84, 966885), (90, 902426), (105, 773508), (126, 644590), (140, 580131), (146, 556290), (180, 451213), (210, 386754), (219, 370860), (252, 322295), (292, 278145), (315, 257836), (365, 222516), (420, 193377), (438, 185430), (511, 158940), (630, 128918), (657, 123620), (730, 111258), (876, 92715), (883, 91980), (1022, 79470), (1095, 74172), (1260, 64459), (1314, 61810), (1460, 55629), (1533, 52980), (1766, 45990), (2044, 39735), (2190, 37086), (2555, 31788), (2628, 30905), (2649, 30660), (3066, 26490), (3285, 24724), (3532, 22995), (4380, 18543), (4415, 18396), (4599, 17660), (5110, 15894), (5298, 15330), (6132, 13245), (6181, 13140), (6570, 12362), (7665, 10596), (7947, 10220), (8830, 9198)]