261602180

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:242

約数の個数: 144

約数和(自身を含む): 674150400

約数和(自身を除く): 412548220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 79, 98, 109, 124, 140, 155, 158, 196, 217, 218, 245, 310, 316, 395, 434, 436, 490, 545, 553, 620, 763, 790, 868, 980, 1085, 1090, 1106, 1519, 1526, 1580, 2170, 2180, 2212, 2449, 2765, 3038, 3052, 3379, 3815, 3871, 4340, 4898, 5341, 5530, 6076, 6758, 7595, 7630, 7742, 8611, 9796, 10682, 11060, 12245, 13516, 15190, 15260, 15484, 16895, 17143, 17222, 19355, 21364, 23653, 24490, 26705, 30380, 33790, 34286, 34444, 38710, 43055, 47306, 48980, 53410, 60277, 67580, 68572, 77420, 85715, 86110, 94612, 106820, 118265, 120001, 120554, 165571, 171430, 172220, 236530, 240002, 241108, 266941, 301385, 331142, 342860, 421939, 473060, 480004, 533882, 600005, 602770, 662284, 827855, 843878, 1067764, 1200010, 1205540, 1334705, 1655710, 1687756, 1868587, 2109695, 2400020, 2669410, 3311420, 3737174, 4219390, 5338820, 7474348, 8438780, 9342935, 13080109, 18685870, 26160218, 37371740, 52320436, 65400545, 130801090, 261602180]

約数ペア:

[(1, 261602180), (2, 130801090), (4, 65400545), (5, 52320436), (7, 37371740), (10, 26160218), (14, 18685870), (20, 13080109), (28, 9342935), (31, 8438780), (35, 7474348), (49, 5338820), (62, 4219390), (70, 3737174), (79, 3311420), (98, 2669410), (109, 2400020), (124, 2109695), (140, 1868587), (155, 1687756), (158, 1655710), (196, 1334705), (217, 1205540), (218, 1200010), (245, 1067764), (310, 843878), (316, 827855), (395, 662284), (434, 602770), (436, 600005), (490, 533882), (545, 480004), (553, 473060), (620, 421939), (763, 342860), (790, 331142), (868, 301385), (980, 266941), (1085, 241108), (1090, 240002), (1106, 236530), (1519, 172220), (1526, 171430), (1580, 165571), (2170, 120554), (2180, 120001), (2212, 118265), (2449, 106820), (2765, 94612), (3038, 86110), (3052, 85715), (3379, 77420), (3815, 68572), (3871, 67580), (4340, 60277), (4898, 53410), (5341, 48980), (5530, 47306), (6076, 43055), (6758, 38710), (7595, 34444), (7630, 34286), (7742, 33790), (8611, 30380), (9796, 26705), (10682, 24490), (11060, 23653), (12245, 21364), (13516, 19355), (15190, 17222), (15260, 17143), (15484, 16895)]