18789420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:164

約数の個数: 144

約数和(自身を含む): 60873120

約数和(自身を除く): 42083700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 109, 130, 156, 169, 170, 195, 204, 218, 221, 255, 260, 327, 338, 340, 390, 436, 442, 507, 510, 545, 654, 663, 676, 780, 845, 884, 1014, 1020, 1090, 1105, 1308, 1326, 1417, 1635, 1690, 1853, 2028, 2180, 2210, 2535, 2652, 2834, 2873, 3270, 3315, 3380, 3706, 4251, 4420, 5070, 5559, 5668, 5746, 6540, 6630, 7085, 7412, 8502, 8619, 9265, 10140, 11118, 11492, 13260, 14170, 14365, 17004, 17238, 18421, 18530, 21255, 22236, 24089, 27795, 28340, 28730, 34476, 36842, 37060, 42510, 43095, 48178, 55263, 55590, 57460, 72267, 73684, 85020, 86190, 92105, 96356, 110526, 111180, 120445, 144534, 172380, 184210, 221052, 240890, 276315, 289068, 313157, 361335, 368420, 481780, 552630, 626314, 722670, 939471, 1105260, 1252628, 1445340, 1565785, 1878942, 3131570, 3757884, 4697355, 6263140, 9394710, 18789420]

約数ペア:

[(1, 18789420), (2, 9394710), (3, 6263140), (4, 4697355), (5, 3757884), (6, 3131570), (10, 1878942), (12, 1565785), (13, 1445340), (15, 1252628), (17, 1105260), (20, 939471), (26, 722670), (30, 626314), (34, 552630), (39, 481780), (51, 368420), (52, 361335), (60, 313157), (65, 289068), (68, 276315), (78, 240890), (85, 221052), (102, 184210), (109, 172380), (130, 144534), (156, 120445), (169, 111180), (170, 110526), (195, 96356), (204, 92105), (218, 86190), (221, 85020), (255, 73684), (260, 72267), (327, 57460), (338, 55590), (340, 55263), (390, 48178), (436, 43095), (442, 42510), (507, 37060), (510, 36842), (545, 34476), (654, 28730), (663, 28340), (676, 27795), (780, 24089), (845, 22236), (884, 21255), (1014, 18530), (1020, 18421), (1090, 17238), (1105, 17004), (1308, 14365), (1326, 14170), (1417, 13260), (1635, 11492), (1690, 11118), (1853, 10140), (2028, 9265), (2180, 8619), (2210, 8502), (2535, 7412), (2652, 7085), (2834, 6630), (2873, 6540), (3270, 5746), (3315, 5668), (3380, 5559), (3706, 5070), (4251, 4420)]