205020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1$

素因数の和:99

約数の個数: 72

約数和(自身を含む): 668304

約数和(自身を除く): 463284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 67, 68, 85, 90, 102, 134, 153, 170, 180, 201, 204, 255, 268, 306, 335, 340, 402, 510, 603, 612, 670, 765, 804, 1005, 1020, 1139, 1206, 1340, 1530, 2010, 2278, 2412, 3015, 3060, 3417, 4020, 4556, 5695, 6030, 6834, 10251, 11390, 12060, 13668, 17085, 20502, 22780, 34170, 41004, 51255, 68340, 102510, 205020]

約数ペア:

[(1, 205020), (2, 102510), (3, 68340), (4, 51255), (5, 41004), (6, 34170), (9, 22780), (10, 20502), (12, 17085), (15, 13668), (17, 12060), (18, 11390), (20, 10251), (30, 6834), (34, 6030), (36, 5695), (45, 4556), (51, 4020), (60, 3417), (67, 3060), (68, 3015), (85, 2412), (90, 2278), (102, 2010), (134, 1530), (153, 1340), (170, 1206), (180, 1139), (201, 1020), (204, 1005), (255, 804), (268, 765), (306, 670), (335, 612), (340, 603), (402, 510)]