20187548420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{1109}}^1\times {\mathrm{1321}}^1$

素因数の和:2505

約数の個数: 96

約数和(自身を含む): 46593519840

約数和(自身を除く): 26405971420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 106, 130, 212, 260, 265, 530, 689, 1060, 1109, 1321, 1378, 2218, 2642, 2756, 3445, 4436, 5284, 5545, 6605, 6890, 11090, 13210, 13780, 14417, 17173, 22180, 26420, 28834, 34346, 57668, 58777, 68692, 70013, 72085, 85865, 117554, 140026, 144170, 171730, 235108, 280052, 288340, 293885, 343460, 350065, 587770, 700130, 764101, 910169, 1175540, 1400260, 1464989, 1528202, 1820338, 2929978, 3056404, 3640676, 3820505, 4550845, 5859956, 7324945, 7641010, 9101690, 14649890, 15282020, 18203380, 19044857, 29299780, 38089714, 76179428, 77644417, 95224285, 155288834, 190448570, 310577668, 380897140, 388222085, 776444170, 1009377421, 1552888340, 2018754842, 4037509684, 5046887105, 10093774210, 20187548420]

約数ペア:

[(1, 20187548420), (2, 10093774210), (4, 5046887105), (5, 4037509684), (10, 2018754842), (13, 1552888340), (20, 1009377421), (26, 776444170), (52, 388222085), (53, 380897140), (65, 310577668), (106, 190448570), (130, 155288834), (212, 95224285), (260, 77644417), (265, 76179428), (530, 38089714), (689, 29299780), (1060, 19044857), (1109, 18203380), (1321, 15282020), (1378, 14649890), (2218, 9101690), (2642, 7641010), (2756, 7324945), (3445, 5859956), (4436, 4550845), (5284, 3820505), (5545, 3640676), (6605, 3056404), (6890, 2929978), (11090, 1820338), (13210, 1528202), (13780, 1464989), (14417, 1400260), (17173, 1175540), (22180, 910169), (26420, 764101), (28834, 700130), (34346, 587770), (57668, 350065), (58777, 343460), (68692, 293885), (70013, 288340), (72085, 280052), (85865, 235108), (117554, 171730), (140026, 144170)]