20393880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{769}}^1$

素因数の和:813

約数の個数: 128

約数和(自身を含む): 69854400

約数和(自身を除く): 49460520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 17, 20, 24, 26, 30, 34, 39, 40, 51, 52, 60, 65, 68, 78, 85, 102, 104, 120, 130, 136, 156, 170, 195, 204, 221, 255, 260, 312, 340, 390, 408, 442, 510, 520, 663, 680, 769, 780, 884, 1020, 1105, 1326, 1538, 1560, 1768, 2040, 2210, 2307, 2652, 3076, 3315, 3845, 4420, 4614, 5304, 6152, 6630, 7690, 8840, 9228, 9997, 11535, 13073, 13260, 15380, 18456, 19994, 23070, 26146, 26520, 29991, 30760, 39219, 39988, 46140, 49985, 52292, 59982, 65365, 78438, 79976, 92280, 99970, 104584, 119964, 130730, 149955, 156876, 169949, 196095, 199940, 239928, 261460, 299910, 313752, 339898, 392190, 399880, 509847, 522920, 599820, 679796, 784380, 849745, 1019694, 1199640, 1359592, 1568760, 1699490, 2039388, 2549235, 3398980, 4078776, 5098470, 6797960, 10196940, 20393880]

約数ペア:

[(1, 20393880), (2, 10196940), (3, 6797960), (4, 5098470), (5, 4078776), (6, 3398980), (8, 2549235), (10, 2039388), (12, 1699490), (13, 1568760), (15, 1359592), (17, 1199640), (20, 1019694), (24, 849745), (26, 784380), (30, 679796), (34, 599820), (39, 522920), (40, 509847), (51, 399880), (52, 392190), (60, 339898), (65, 313752), (68, 299910), (78, 261460), (85, 239928), (102, 199940), (104, 196095), (120, 169949), (130, 156876), (136, 149955), (156, 130730), (170, 119964), (195, 104584), (204, 99970), (221, 92280), (255, 79976), (260, 78438), (312, 65365), (340, 59982), (390, 52292), (408, 49985), (442, 46140), (510, 39988), (520, 39219), (663, 30760), (680, 29991), (769, 26520), (780, 26146), (884, 23070), (1020, 19994), (1105, 18456), (1326, 15380), (1538, 13260), (1560, 13073), (1768, 11535), (2040, 9997), (2210, 9228), (2307, 8840), (2652, 7690), (3076, 6630), (3315, 6152), (3845, 5304), (4420, 4614)]