21250476

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2671}}^1$

素因数の和:2711

約数の個数: 72

約数和(自身を含む): 61274304

約数和(自身を除く): 40023828

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 39, 51, 52, 68, 78, 102, 117, 153, 156, 204, 221, 234, 306, 442, 468, 612, 663, 884, 1326, 1989, 2652, 2671, 3978, 5342, 7956, 8013, 10684, 16026, 24039, 32052, 34723, 45407, 48078, 69446, 90814, 96156, 104169, 136221, 138892, 181628, 208338, 272442, 312507, 408663, 416676, 544884, 590291, 625014, 817326, 1180582, 1250028, 1634652, 1770873, 2361164, 3541746, 5312619, 7083492, 10625238, 21250476]

約数ペア:

[(1, 21250476), (2, 10625238), (3, 7083492), (4, 5312619), (6, 3541746), (9, 2361164), (12, 1770873), (13, 1634652), (17, 1250028), (18, 1180582), (26, 817326), (34, 625014), (36, 590291), (39, 544884), (51, 416676), (52, 408663), (68, 312507), (78, 272442), (102, 208338), (117, 181628), (153, 138892), (156, 136221), (204, 104169), (221, 96156), (234, 90814), (306, 69446), (442, 48078), (468, 45407), (612, 34723), (663, 32052), (884, 24039), (1326, 16026), (1989, 10684), (2652, 8013), (2671, 7956), (3978, 5342)]