189991980

素因数分解:

$2^2\times 3^6\times 5^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 168

約数和(自身を含む): 609264432

約数和(自身を除く): 419272452

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 83, 90, 108, 135, 157, 162, 166, 180, 243, 249, 270, 314, 324, 332, 405, 415, 471, 486, 498, 540, 628, 729, 747, 785, 810, 830, 942, 972, 996, 1215, 1245, 1413, 1458, 1494, 1570, 1620, 1660, 1884, 2241, 2355, 2430, 2490, 2826, 2916, 2988, 3140, 3645, 3735, 4239, 4482, 4710, 4860, 4980, 5652, 6723, 7065, 7290, 7470, 8478, 8964, 9420, 11205, 12717, 13031, 13446, 14130, 14580, 14940, 16956, 20169, 21195, 22410, 25434, 26062, 26892, 28260, 33615, 38151, 39093, 40338, 42390, 44820, 50868, 52124, 60507, 63585, 65155, 67230, 76302, 78186, 80676, 84780, 100845, 114453, 117279, 121014, 127170, 130310, 134460, 152604, 156372, 190755, 195465, 201690, 228906, 234558, 242028, 254340, 260620, 302535, 351837, 381510, 390930, 403380, 457812, 469116, 572265, 586395, 605070, 703674, 763020, 781860, 1055511, 1144530, 1172790, 1210140, 1407348, 1759185, 2111022, 2289060, 2345580, 3166533, 3518370, 4222044, 5277555, 6333066, 7036740, 9499599, 10555110, 12666132, 15832665, 18999198, 21110220, 31665330, 37998396, 47497995, 63330660, 94995990, 189991980]

約数ペア:

[(1, 189991980), (2, 94995990), (3, 63330660), (4, 47497995), (5, 37998396), (6, 31665330), (9, 21110220), (10, 18999198), (12, 15832665), (15, 12666132), (18, 10555110), (20, 9499599), (27, 7036740), (30, 6333066), (36, 5277555), (45, 4222044), (54, 3518370), (60, 3166533), (81, 2345580), (83, 2289060), (90, 2111022), (108, 1759185), (135, 1407348), (157, 1210140), (162, 1172790), (166, 1144530), (180, 1055511), (243, 781860), (249, 763020), (270, 703674), (314, 605070), (324, 586395), (332, 572265), (405, 469116), (415, 457812), (471, 403380), (486, 390930), (498, 381510), (540, 351837), (628, 302535), (729, 260620), (747, 254340), (785, 242028), (810, 234558), (830, 228906), (942, 201690), (972, 195465), (996, 190755), (1215, 156372), (1245, 152604), (1413, 134460), (1458, 130310), (1494, 127170), (1570, 121014), (1620, 117279), (1660, 114453), (1884, 100845), (2241, 84780), (2355, 80676), (2430, 78186), (2490, 76302), (2826, 67230), (2916, 65155), (2988, 63585), (3140, 60507), (3645, 52124), (3735, 50868), (4239, 44820), (4482, 42390), (4710, 40338), (4860, 39093), (4980, 38151), (5652, 33615), (6723, 28260), (7065, 26892), (7290, 26062), (7470, 25434), (8478, 22410), (8964, 21195), (9420, 20169), (11205, 16956), (12717, 14940), (13031, 14580), (13446, 14130)]