21820100

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:269

約数の個数: 72

約数和(自身を含む): 50621760

約数和(自身を除く): 28801660

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 53, 92, 100, 106, 115, 179, 212, 230, 265, 358, 460, 530, 575, 716, 895, 1060, 1150, 1219, 1325, 1790, 2300, 2438, 2650, 3580, 4117, 4475, 4876, 5300, 6095, 8234, 8950, 9487, 12190, 16468, 17900, 18974, 20585, 24380, 30475, 37948, 41170, 47435, 60950, 82340, 94870, 102925, 121900, 189740, 205850, 218201, 237175, 411700, 436402, 474350, 872804, 948700, 1091005, 2182010, 4364020, 5455025, 10910050, 21820100]

約数ペア:

[(1, 21820100), (2, 10910050), (4, 5455025), (5, 4364020), (10, 2182010), (20, 1091005), (23, 948700), (25, 872804), (46, 474350), (50, 436402), (53, 411700), (92, 237175), (100, 218201), (106, 205850), (115, 189740), (179, 121900), (212, 102925), (230, 94870), (265, 82340), (358, 60950), (460, 47435), (530, 41170), (575, 37948), (716, 30475), (895, 24380), (1060, 20585), (1150, 18974), (1219, 17900), (1325, 16468), (1790, 12190), (2300, 9487), (2438, 8950), (2650, 8234), (3580, 6095), (4117, 5300), (4475, 4876)]