20123492520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{88681}}^1$

素因数の和:88787

約数の個数: 128

約数和(自身を含む): 63340231680

約数和(自身を除く): 43216739160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 61, 62, 93, 120, 122, 124, 155, 183, 186, 244, 248, 305, 310, 366, 372, 465, 488, 610, 620, 732, 744, 915, 930, 1220, 1240, 1464, 1830, 1860, 1891, 2440, 3660, 3720, 3782, 5673, 7320, 7564, 9455, 11346, 15128, 18910, 22692, 28365, 37820, 45384, 56730, 75640, 88681, 113460, 177362, 226920, 266043, 354724, 443405, 532086, 709448, 886810, 1064172, 1330215, 1773620, 2128344, 2660430, 2749111, 3547240, 5320860, 5409541, 5498222, 8247333, 10641720, 10819082, 10996444, 13745555, 16228623, 16494666, 21638164, 21992888, 27047705, 27491110, 32457246, 32989332, 41236665, 43276328, 54095410, 54982220, 64914492, 65978664, 81143115, 82473330, 108190820, 109964440, 129828984, 162286230, 164946660, 167695771, 216381640, 324572460, 329893320, 335391542, 503087313, 649144920, 670783084, 838478855, 1006174626, 1341566168, 1676957710, 2012349252, 2515436565, 3353915420, 4024698504, 5030873130, 6707830840, 10061746260, 20123492520]

約数ペア:

[(1, 20123492520), (2, 10061746260), (3, 6707830840), (4, 5030873130), (5, 4024698504), (6, 3353915420), (8, 2515436565), (10, 2012349252), (12, 1676957710), (15, 1341566168), (20, 1006174626), (24, 838478855), (30, 670783084), (31, 649144920), (40, 503087313), (60, 335391542), (61, 329893320), (62, 324572460), (93, 216381640), (120, 167695771), (122, 164946660), (124, 162286230), (155, 129828984), (183, 109964440), (186, 108190820), (244, 82473330), (248, 81143115), (305, 65978664), (310, 64914492), (366, 54982220), (372, 54095410), (465, 43276328), (488, 41236665), (610, 32989332), (620, 32457246), (732, 27491110), (744, 27047705), (915, 21992888), (930, 21638164), (1220, 16494666), (1240, 16228623), (1464, 13745555), (1830, 10996444), (1860, 10819082), (1891, 10641720), (2440, 8247333), (3660, 5498222), (3720, 5409541), (3782, 5320860), (5673, 3547240), (7320, 2749111), (7564, 2660430), (9455, 2128344), (11346, 1773620), (15128, 1330215), (18910, 1064172), (22692, 886810), (28365, 709448), (37820, 532086), (45384, 443405), (56730, 354724), (75640, 266043), (88681, 226920), (113460, 177362)]