20123170720

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{19181}}^1$

素因数の和:19358

約数の個数: 96

約数和(自身を含む): 48725349120

約数和(自身を除く): 28602178400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 83, 158, 160, 166, 316, 332, 395, 415, 632, 664, 790, 830, 1264, 1328, 1580, 1660, 2528, 2656, 3160, 3320, 6320, 6557, 6640, 12640, 13114, 13280, 19181, 26228, 32785, 38362, 52456, 65570, 76724, 95905, 104912, 131140, 153448, 191810, 209824, 262280, 306896, 383620, 524560, 613792, 767240, 1049120, 1515299, 1534480, 1592023, 3030598, 3068960, 3184046, 6061196, 6368092, 7576495, 7960115, 12122392, 12736184, 15152990, 15920230, 24244784, 25472368, 30305980, 31840460, 48489568, 50944736, 60611960, 63680920, 121223920, 125769817, 127361840, 242447840, 251539634, 254723680, 503079268, 628849085, 1006158536, 1257698170, 2012317072, 2515396340, 4024634144, 5030792680, 10061585360, 20123170720]

約数ペア:

[(1, 20123170720), (2, 10061585360), (4, 5030792680), (5, 4024634144), (8, 2515396340), (10, 2012317072), (16, 1257698170), (20, 1006158536), (32, 628849085), (40, 503079268), (79, 254723680), (80, 251539634), (83, 242447840), (158, 127361840), (160, 125769817), (166, 121223920), (316, 63680920), (332, 60611960), (395, 50944736), (415, 48489568), (632, 31840460), (664, 30305980), (790, 25472368), (830, 24244784), (1264, 15920230), (1328, 15152990), (1580, 12736184), (1660, 12122392), (2528, 7960115), (2656, 7576495), (3160, 6368092), (3320, 6061196), (6320, 3184046), (6557, 3068960), (6640, 3030598), (12640, 1592023), (13114, 1534480), (13280, 1515299), (19181, 1049120), (26228, 767240), (32785, 613792), (38362, 524560), (52456, 383620), (65570, 306896), (76724, 262280), (95905, 209824), (104912, 191810), (131140, 153448)]