28056420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{3181}}^1$

素因数の和:3210

約数の個数: 108

約数和(自身を含む): 99030204

約数和(自身を除く): 70973784

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 3181, 4410, 6362, 8820, 9543, 12724, 15905, 19086, 22267, 28629, 31810, 38172, 44534, 47715, 57258, 63620, 66801, 89068, 95430, 111335, 114516, 133602, 143145, 155869, 190860, 200403, 222670, 267204, 286290, 311738, 334005, 400806, 445340, 467607, 572580, 623476, 668010, 779345, 801612, 935214, 1002015, 1336020, 1402821, 1558690, 1870428, 2004030, 2338035, 2805642, 3117380, 4008060, 4676070, 5611284, 7014105, 9352140, 14028210, 28056420]

約数ペア:

[(1, 28056420), (2, 14028210), (3, 9352140), (4, 7014105), (5, 5611284), (6, 4676070), (7, 4008060), (9, 3117380), (10, 2805642), (12, 2338035), (14, 2004030), (15, 1870428), (18, 1558690), (20, 1402821), (21, 1336020), (28, 1002015), (30, 935214), (35, 801612), (36, 779345), (42, 668010), (45, 623476), (49, 572580), (60, 467607), (63, 445340), (70, 400806), (84, 334005), (90, 311738), (98, 286290), (105, 267204), (126, 222670), (140, 200403), (147, 190860), (180, 155869), (196, 143145), (210, 133602), (245, 114516), (252, 111335), (294, 95430), (315, 89068), (420, 66801), (441, 63620), (490, 57258), (588, 47715), (630, 44534), (735, 38172), (882, 31810), (980, 28629), (1260, 22267), (1470, 19086), (1764, 15905), (2205, 12724), (2940, 9543), (3181, 8820), (4410, 6362)]