81680220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{173}}^1$

素因数の和:292

約数の個数: 144

約数和(自身を含む): 259170912

約数和(自身を除く): 177490692

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 61, 86, 90, 122, 129, 172, 173, 180, 183, 215, 244, 258, 305, 346, 366, 387, 430, 516, 519, 549, 610, 645, 692, 732, 774, 860, 865, 915, 1038, 1098, 1220, 1290, 1548, 1557, 1730, 1830, 1935, 2076, 2196, 2580, 2595, 2623, 2745, 3114, 3460, 3660, 3870, 5190, 5246, 5490, 6228, 7439, 7740, 7785, 7869, 10380, 10492, 10553, 10980, 13115, 14878, 15570, 15738, 21106, 22317, 23607, 26230, 29756, 31140, 31476, 31659, 37195, 39345, 42212, 44634, 47214, 52460, 52765, 63318, 66951, 74390, 78690, 89268, 94428, 94977, 105530, 111585, 118035, 126636, 133902, 148780, 157380, 158295, 189954, 211060, 223170, 236070, 267804, 316590, 334755, 379908, 446340, 453779, 472140, 474885, 633180, 669510, 907558, 949770, 1339020, 1361337, 1815116, 1899540, 2268895, 2722674, 4084011, 4537790, 5445348, 6806685, 8168022, 9075580, 13613370, 16336044, 20420055, 27226740, 40840110, 81680220]

約数ペア:

[(1, 81680220), (2, 40840110), (3, 27226740), (4, 20420055), (5, 16336044), (6, 13613370), (9, 9075580), (10, 8168022), (12, 6806685), (15, 5445348), (18, 4537790), (20, 4084011), (30, 2722674), (36, 2268895), (43, 1899540), (45, 1815116), (60, 1361337), (61, 1339020), (86, 949770), (90, 907558), (122, 669510), (129, 633180), (172, 474885), (173, 472140), (180, 453779), (183, 446340), (215, 379908), (244, 334755), (258, 316590), (305, 267804), (346, 236070), (366, 223170), (387, 211060), (430, 189954), (516, 158295), (519, 157380), (549, 148780), (610, 133902), (645, 126636), (692, 118035), (732, 111585), (774, 105530), (860, 94977), (865, 94428), (915, 89268), (1038, 78690), (1098, 74390), (1220, 66951), (1290, 63318), (1548, 52765), (1557, 52460), (1730, 47214), (1830, 44634), (1935, 42212), (2076, 39345), (2196, 37195), (2580, 31659), (2595, 31476), (2623, 31140), (2745, 29756), (3114, 26230), (3460, 23607), (3660, 22317), (3870, 21106), (5190, 15738), (5246, 15570), (5490, 14878), (6228, 13115), (7439, 10980), (7740, 10553), (7785, 10492), (7869, 10380)]