21947380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{389}}^1$

素因数の和:449

約数の個数: 96

約数和(自身を含む): 58705920

約数和(自身を除く): 36758540

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 260, 310, 364, 389, 403, 434, 455, 620, 778, 806, 868, 910, 1085, 1556, 1612, 1820, 1945, 2015, 2170, 2723, 2821, 3890, 4030, 4340, 5057, 5446, 5642, 7780, 8060, 10114, 10892, 11284, 12059, 13615, 14105, 20228, 24118, 25285, 27230, 28210, 35399, 48236, 50570, 54460, 56420, 60295, 70798, 84413, 101140, 120590, 141596, 156767, 168826, 176995, 241180, 313534, 337652, 353990, 422065, 627068, 707980, 783835, 844130, 1097369, 1567670, 1688260, 2194738, 3135340, 4389476, 5486845, 10973690, 21947380]

約数ペア:

[(1, 21947380), (2, 10973690), (4, 5486845), (5, 4389476), (7, 3135340), (10, 2194738), (13, 1688260), (14, 1567670), (20, 1097369), (26, 844130), (28, 783835), (31, 707980), (35, 627068), (52, 422065), (62, 353990), (65, 337652), (70, 313534), (91, 241180), (124, 176995), (130, 168826), (140, 156767), (155, 141596), (182, 120590), (217, 101140), (260, 84413), (310, 70798), (364, 60295), (389, 56420), (403, 54460), (434, 50570), (455, 48236), (620, 35399), (778, 28210), (806, 27230), (868, 25285), (910, 24118), (1085, 20228), (1556, 14105), (1612, 13615), (1820, 12059), (1945, 11284), (2015, 10892), (2170, 10114), (2723, 8060), (2821, 7780), (3890, 5642), (4030, 5446), (4340, 5057)]