21168528040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{313}}^1\times {\mathrm{547}}^1$

素因数の和:1163

約数の個数: 128

約数和(自身を含む): 52406248320

約数和(自身を除く): 31237720280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 281, 313, 440, 547, 562, 626, 1094, 1124, 1252, 1405, 1565, 2188, 2248, 2504, 2735, 2810, 3091, 3130, 3443, 4376, 5470, 5620, 6017, 6182, 6260, 6886, 10940, 11240, 12034, 12364, 12520, 13772, 15455, 17215, 21880, 24068, 24728, 27544, 30085, 30910, 34430, 48136, 60170, 61820, 68860, 87953, 120340, 123640, 137720, 153707, 171211, 175906, 240680, 307414, 342422, 351812, 439765, 614828, 684844, 703624, 768535, 856055, 879530, 967483, 1229656, 1369688, 1537070, 1690777, 1712110, 1759060, 1883321, 1934966, 3074140, 3381554, 3424220, 3518120, 3766642, 3869932, 4837415, 6148280, 6763108, 6848440, 7533284, 7739864, 8453885, 9416605, 9674830, 13526216, 15066568, 16907770, 18833210, 19349660, 33815540, 37666420, 38699320, 48110291, 67631080, 75332840, 96220582, 192441164, 240551455, 384882328, 481102910, 529213201, 962205820, 1058426402, 1924411640, 2116852804, 2646066005, 4233705608, 5292132010, 10584264020, 21168528040]

約数ペア:

[(1, 21168528040), (2, 10584264020), (4, 5292132010), (5, 4233705608), (8, 2646066005), (10, 2116852804), (11, 1924411640), (20, 1058426402), (22, 962205820), (40, 529213201), (44, 481102910), (55, 384882328), (88, 240551455), (110, 192441164), (220, 96220582), (281, 75332840), (313, 67631080), (440, 48110291), (547, 38699320), (562, 37666420), (626, 33815540), (1094, 19349660), (1124, 18833210), (1252, 16907770), (1405, 15066568), (1565, 13526216), (2188, 9674830), (2248, 9416605), (2504, 8453885), (2735, 7739864), (2810, 7533284), (3091, 6848440), (3130, 6763108), (3443, 6148280), (4376, 4837415), (5470, 3869932), (5620, 3766642), (6017, 3518120), (6182, 3424220), (6260, 3381554), (6886, 3074140), (10940, 1934966), (11240, 1883321), (12034, 1759060), (12364, 1712110), (12520, 1690777), (13772, 1537070), (15455, 1369688), (17215, 1229656), (21880, 967483), (24068, 879530), (24728, 856055), (27544, 768535), (30085, 703624), (30910, 684844), (34430, 614828), (48136, 439765), (60170, 351812), (61820, 342422), (68860, 307414), (87953, 240680), (120340, 175906), (123640, 171211), (137720, 153707)]