20710300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:295

約数の個数: 72

約数和(自身を含む): 49215600

約数和(自身を除く): 28505300

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 89, 100, 130, 178, 179, 260, 325, 356, 358, 445, 650, 716, 890, 895, 1157, 1300, 1780, 1790, 2225, 2314, 2327, 3580, 4450, 4475, 4628, 4654, 5785, 8900, 8950, 9308, 11570, 11635, 15931, 17900, 23140, 23270, 28925, 31862, 46540, 57850, 58175, 63724, 79655, 115700, 116350, 159310, 207103, 232700, 318620, 398275, 414206, 796550, 828412, 1035515, 1593100, 2071030, 4142060, 5177575, 10355150, 20710300]

約数ペア:

[(1, 20710300), (2, 10355150), (4, 5177575), (5, 4142060), (10, 2071030), (13, 1593100), (20, 1035515), (25, 828412), (26, 796550), (50, 414206), (52, 398275), (65, 318620), (89, 232700), (100, 207103), (130, 159310), (178, 116350), (179, 115700), (260, 79655), (325, 63724), (356, 58175), (358, 57850), (445, 46540), (650, 31862), (716, 28925), (890, 23270), (895, 23140), (1157, 17900), (1300, 15931), (1780, 11635), (1790, 11570), (2225, 9308), (2314, 8950), (2327, 8900), (3580, 5785), (4450, 4654), (4475, 4628)]