21970260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1$

素因数の和:298

約数の個数: 144

約数和(自身を含む): 73841040

約数和(自身を除く): 51870780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 41, 45, 52, 60, 65, 78, 82, 90, 117, 123, 130, 156, 164, 180, 195, 205, 229, 234, 246, 260, 369, 390, 410, 458, 468, 492, 533, 585, 615, 687, 738, 780, 820, 916, 1066, 1145, 1170, 1230, 1374, 1476, 1599, 1845, 2061, 2132, 2290, 2340, 2460, 2665, 2748, 2977, 3198, 3435, 3690, 4122, 4580, 4797, 5330, 5954, 6396, 6870, 7380, 7995, 8244, 8931, 9389, 9594, 10305, 10660, 11908, 13740, 14885, 15990, 17862, 18778, 19188, 20610, 23985, 26793, 28167, 29770, 31980, 35724, 37556, 41220, 44655, 46945, 47970, 53586, 56334, 59540, 84501, 89310, 93890, 95940, 107172, 112668, 122057, 133965, 140835, 169002, 178620, 187780, 244114, 267930, 281670, 338004, 366171, 422505, 488228, 535860, 563340, 610285, 732342, 845010, 1098513, 1220570, 1464684, 1690020, 1830855, 2197026, 2441140, 3661710, 4394052, 5492565, 7323420, 10985130, 21970260]

約数ペア:

[(1, 21970260), (2, 10985130), (3, 7323420), (4, 5492565), (5, 4394052), (6, 3661710), (9, 2441140), (10, 2197026), (12, 1830855), (13, 1690020), (15, 1464684), (18, 1220570), (20, 1098513), (26, 845010), (30, 732342), (36, 610285), (39, 563340), (41, 535860), (45, 488228), (52, 422505), (60, 366171), (65, 338004), (78, 281670), (82, 267930), (90, 244114), (117, 187780), (123, 178620), (130, 169002), (156, 140835), (164, 133965), (180, 122057), (195, 112668), (205, 107172), (229, 95940), (234, 93890), (246, 89310), (260, 84501), (369, 59540), (390, 56334), (410, 53586), (458, 47970), (468, 46945), (492, 44655), (533, 41220), (585, 37556), (615, 35724), (687, 31980), (738, 29770), (780, 28167), (820, 26793), (916, 23985), (1066, 20610), (1145, 19188), (1170, 18778), (1230, 17862), (1374, 15990), (1476, 14885), (1599, 13740), (1845, 11908), (2061, 10660), (2132, 10305), (2290, 9594), (2340, 9389), (2460, 8931), (2665, 8244), (2748, 7995), (2977, 7380), (3198, 6870), (3435, 6396), (3690, 5954), (4122, 5330), (4580, 4797)]