20041428

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:229

約数の個数: 96

約数和(自身を含む): 54996480

約数和(自身を除く): 34955052

約数列:

[1, 2, 3, 4, 6, 11, 12, 19, 22, 33, 38, 44, 57, 61, 66, 76, 114, 122, 131, 132, 183, 209, 228, 244, 262, 366, 393, 418, 524, 627, 671, 732, 786, 836, 1159, 1254, 1342, 1441, 1572, 2013, 2318, 2489, 2508, 2684, 2882, 3477, 4026, 4323, 4636, 4978, 5764, 6954, 7467, 7991, 8052, 8646, 9956, 12749, 13908, 14934, 15982, 17292, 23973, 25498, 27379, 29868, 31964, 38247, 47946, 50996, 54758, 76494, 82137, 87901, 95892, 109516, 151829, 152988, 164274, 175802, 263703, 303658, 328548, 351604, 455487, 527406, 607316, 910974, 1054812, 1670119, 1821948, 3340238, 5010357, 6680476, 10020714, 20041428]

約数ペア:

[(1, 20041428), (2, 10020714), (3, 6680476), (4, 5010357), (6, 3340238), (11, 1821948), (12, 1670119), (19, 1054812), (22, 910974), (33, 607316), (38, 527406), (44, 455487), (57, 351604), (61, 328548), (66, 303658), (76, 263703), (114, 175802), (122, 164274), (131, 152988), (132, 151829), (183, 109516), (209, 95892), (228, 87901), (244, 82137), (262, 76494), (366, 54758), (393, 50996), (418, 47946), (524, 38247), (627, 31964), (671, 29868), (732, 27379), (786, 25498), (836, 23973), (1159, 17292), (1254, 15982), (1342, 14934), (1441, 13908), (1572, 12749), (2013, 9956), (2318, 8646), (2489, 8052), (2508, 7991), (2684, 7467), (2882, 6954), (3477, 5764), (4026, 4978), (4323, 4636)]