2080408040

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{15823}}^1$

素因数の和:16026

約数の個数: 64

約数和(自身を含む): 4956076800

約数和(自身を除く): 2875668760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 173, 190, 346, 380, 692, 760, 865, 1384, 1730, 3287, 3460, 6574, 6920, 13148, 15823, 16435, 26296, 31646, 32870, 63292, 65740, 79115, 126584, 131480, 158230, 300637, 316460, 601274, 632920, 1202548, 1503185, 2405096, 2737379, 3006370, 5474758, 6012740, 10949516, 12025480, 13686895, 21899032, 27373790, 52010201, 54747580, 104020402, 109495160, 208040804, 260051005, 416081608, 520102010, 1040204020, 2080408040]

約数ペア:

[(1, 2080408040), (2, 1040204020), (4, 520102010), (5, 416081608), (8, 260051005), (10, 208040804), (19, 109495160), (20, 104020402), (38, 54747580), (40, 52010201), (76, 27373790), (95, 21899032), (152, 13686895), (173, 12025480), (190, 10949516), (346, 6012740), (380, 5474758), (692, 3006370), (760, 2737379), (865, 2405096), (1384, 1503185), (1730, 1202548), (3287, 632920), (3460, 601274), (6574, 316460), (6920, 300637), (13148, 158230), (15823, 131480), (16435, 126584), (26296, 79115), (31646, 65740), (32870, 63292)]