2028780

素因数分解:

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

素因数の和:65

約数の個数: 144

約数和(自身を含む): 7220640

約数和(自身を除く): 5191860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 17, 18, 20, 26, 27, 30, 34, 36, 39, 45, 51, 52, 54, 60, 65, 68, 78, 85, 90, 102, 108, 117, 130, 135, 153, 156, 170, 180, 195, 204, 221, 234, 255, 260, 270, 289, 306, 340, 351, 390, 442, 459, 468, 510, 540, 578, 585, 612, 663, 702, 765, 780, 867, 884, 918, 1020, 1105, 1156, 1170, 1326, 1404, 1445, 1530, 1734, 1755, 1836, 1989, 2210, 2295, 2340, 2601, 2652, 2890, 3060, 3315, 3468, 3510, 3757, 3978, 4335, 4420, 4590, 5202, 5780, 5967, 6630, 7020, 7514, 7803, 7956, 8670, 9180, 9945, 10404, 11271, 11934, 13005, 13260, 15028, 15606, 17340, 18785, 19890, 22542, 23868, 26010, 29835, 31212, 33813, 37570, 39015, 39780, 45084, 52020, 56355, 59670, 67626, 75140, 78030, 101439, 112710, 119340, 135252, 156060, 169065, 202878, 225420, 338130, 405756, 507195, 676260, 1014390, 2028780]

約数ペア:

[(1, 2028780), (2, 1014390), (3, 676260), (4, 507195), (5, 405756), (6, 338130), (9, 225420), (10, 202878), (12, 169065), (13, 156060), (15, 135252), (17, 119340), (18, 112710), (20, 101439), (26, 78030), (27, 75140), (30, 67626), (34, 59670), (36, 56355), (39, 52020), (45, 45084), (51, 39780), (52, 39015), (54, 37570), (60, 33813), (65, 31212), (68, 29835), (78, 26010), (85, 23868), (90, 22542), (102, 19890), (108, 18785), (117, 17340), (130, 15606), (135, 15028), (153, 13260), (156, 13005), (170, 11934), (180, 11271), (195, 10404), (204, 9945), (221, 9180), (234, 8670), (255, 7956), (260, 7803), (270, 7514), (289, 7020), (306, 6630), (340, 5967), (351, 5780), (390, 5202), (442, 4590), (459, 4420), (468, 4335), (510, 3978), (540, 3757), (578, 3510), (585, 3468), (612, 3315), (663, 3060), (702, 2890), (765, 2652), (780, 2601), (867, 2340), (884, 2295), (918, 2210), (1020, 1989), (1105, 1836), (1156, 1755), (1170, 1734), (1326, 1530), (1404, 1445)]