81420720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:279

約数の個数: 160

約数和(自身を含む): 265643712

約数和(自身を除く): 184222992

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 37, 40, 48, 53, 60, 74, 80, 106, 111, 120, 148, 159, 173, 185, 212, 222, 240, 265, 296, 318, 346, 370, 424, 444, 519, 530, 555, 592, 636, 692, 740, 795, 848, 865, 888, 1038, 1060, 1110, 1272, 1384, 1480, 1590, 1730, 1776, 1961, 2076, 2120, 2220, 2544, 2595, 2768, 2960, 3180, 3460, 3922, 4152, 4240, 4440, 5190, 5883, 6360, 6401, 6920, 7844, 8304, 8880, 9169, 9805, 10380, 11766, 12720, 12802, 13840, 15688, 18338, 19203, 19610, 20760, 23532, 25604, 27507, 29415, 31376, 32005, 36676, 38406, 39220, 41520, 45845, 47064, 51208, 55014, 58830, 64010, 73352, 76812, 78440, 91690, 94128, 96015, 102416, 110028, 117660, 128020, 137535, 146704, 153624, 156880, 183380, 192030, 220056, 235320, 256040, 275070, 307248, 339253, 366760, 384060, 440112, 470640, 512080, 550140, 678506, 733520, 768120, 1017759, 1100280, 1357012, 1536240, 1696265, 2035518, 2200560, 2714024, 3392530, 4071036, 5088795, 5428048, 6785060, 8142072, 10177590, 13570120, 16284144, 20355180, 27140240, 40710360, 81420720]

約数ペア:

[(1, 81420720), (2, 40710360), (3, 27140240), (4, 20355180), (5, 16284144), (6, 13570120), (8, 10177590), (10, 8142072), (12, 6785060), (15, 5428048), (16, 5088795), (20, 4071036), (24, 3392530), (30, 2714024), (37, 2200560), (40, 2035518), (48, 1696265), (53, 1536240), (60, 1357012), (74, 1100280), (80, 1017759), (106, 768120), (111, 733520), (120, 678506), (148, 550140), (159, 512080), (173, 470640), (185, 440112), (212, 384060), (222, 366760), (240, 339253), (265, 307248), (296, 275070), (318, 256040), (346, 235320), (370, 220056), (424, 192030), (444, 183380), (519, 156880), (530, 153624), (555, 146704), (592, 137535), (636, 128020), (692, 117660), (740, 110028), (795, 102416), (848, 96015), (865, 94128), (888, 91690), (1038, 78440), (1060, 76812), (1110, 73352), (1272, 64010), (1384, 58830), (1480, 55014), (1590, 51208), (1730, 47064), (1776, 45845), (1961, 41520), (2076, 39220), (2120, 38406), (2220, 36676), (2544, 32005), (2595, 31376), (2768, 29415), (2960, 27507), (3180, 25604), (3460, 23532), (3922, 20760), (4152, 19610), (4240, 19203), (4440, 18338), (5190, 15688), (5883, 13840), (6360, 12802), (6401, 12720), (6920, 11766), (7844, 10380), (8304, 9805), (8880, 9169)]