81431820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12227}}^1$

素因数の和:12279

約数の個数: 72

約数和(自身を含む): 253706544

約数和(自身を除く): 172274724

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 37, 45, 60, 74, 90, 111, 148, 180, 185, 222, 333, 370, 444, 555, 666, 740, 1110, 1332, 1665, 2220, 3330, 6660, 12227, 24454, 36681, 48908, 61135, 73362, 110043, 122270, 146724, 183405, 220086, 244540, 366810, 440172, 452399, 550215, 733620, 904798, 1100430, 1357197, 1809596, 2200860, 2261995, 2714394, 4071591, 4523990, 5428788, 6785985, 8143182, 9047980, 13571970, 16286364, 20357955, 27143940, 40715910, 81431820]

約数ペア:

[(1, 81431820), (2, 40715910), (3, 27143940), (4, 20357955), (5, 16286364), (6, 13571970), (9, 9047980), (10, 8143182), (12, 6785985), (15, 5428788), (18, 4523990), (20, 4071591), (30, 2714394), (36, 2261995), (37, 2200860), (45, 1809596), (60, 1357197), (74, 1100430), (90, 904798), (111, 733620), (148, 550215), (180, 452399), (185, 440172), (222, 366810), (333, 244540), (370, 220086), (444, 183405), (555, 146724), (666, 122270), (740, 110043), (1110, 73362), (1332, 61135), (1665, 48908), (2220, 36681), (3330, 24454), (6660, 12227)]