21363560

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 51613200

約数和(自身を除く): 30249640

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 89, 136, 170, 178, 340, 353, 356, 445, 680, 706, 712, 890, 1412, 1513, 1765, 1780, 2824, 3026, 3530, 3560, 6001, 6052, 7060, 7565, 12002, 12104, 14120, 15130, 24004, 30005, 30260, 31417, 48008, 60010, 60520, 62834, 120020, 125668, 157085, 240040, 251336, 314170, 534089, 628340, 1068178, 1256680, 2136356, 2670445, 4272712, 5340890, 10681780, 21363560]

約数ペア:

[(1, 21363560), (2, 10681780), (4, 5340890), (5, 4272712), (8, 2670445), (10, 2136356), (17, 1256680), (20, 1068178), (34, 628340), (40, 534089), (68, 314170), (85, 251336), (89, 240040), (136, 157085), (170, 125668), (178, 120020), (340, 62834), (353, 60520), (356, 60010), (445, 48008), (680, 31417), (706, 30260), (712, 30005), (890, 24004), (1412, 15130), (1513, 14120), (1765, 12104), (1780, 12002), (2824, 7565), (3026, 7060), (3530, 6052), (3560, 6001)]