2021135340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{687461}}^1$

素因数の和:687487

約数の個数: 72

約数和(自身を含む): 6583136112

約数和(自身を除く): 4562000772

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 687461, 1374922, 2062383, 2749844, 3437305, 4124766, 4812227, 6874610, 8249532, 9624454, 10311915, 13749220, 14436681, 19248908, 20623830, 24061135, 28873362, 33685589, 41247660, 48122270, 57746724, 67371178, 72183405, 96244540, 101056767, 134742356, 144366810, 168427945, 202113534, 288733620, 336855890, 404227068, 505283835, 673711780, 1010567670, 2021135340]

約数ペア:

[(1, 2021135340), (2, 1010567670), (3, 673711780), (4, 505283835), (5, 404227068), (6, 336855890), (7, 288733620), (10, 202113534), (12, 168427945), (14, 144366810), (15, 134742356), (20, 101056767), (21, 96244540), (28, 72183405), (30, 67371178), (35, 57746724), (42, 48122270), (49, 41247660), (60, 33685589), (70, 28873362), (84, 24061135), (98, 20623830), (105, 19248908), (140, 14436681), (147, 13749220), (196, 10311915), (210, 9624454), (245, 8249532), (294, 6874610), (420, 4812227), (490, 4124766), (588, 3437305), (735, 2749844), (980, 2062383), (1470, 1374922), (2940, 687461)]