217484540

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{397}}^1$

素因数の和:476

約数の個数: 144

約数和(自身を含む): 586932192

約数和(自身を除く): 369447652

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 43, 49, 52, 65, 70, 86, 91, 98, 130, 140, 172, 182, 196, 215, 245, 260, 301, 364, 397, 430, 455, 490, 559, 602, 637, 794, 860, 910, 980, 1118, 1204, 1274, 1505, 1588, 1820, 1985, 2107, 2236, 2548, 2779, 2795, 3010, 3185, 3913, 3970, 4214, 5161, 5558, 5590, 6020, 6370, 7826, 7940, 8428, 10322, 10535, 11116, 11180, 12740, 13895, 15652, 17071, 19453, 19565, 20644, 21070, 25805, 27391, 27790, 34142, 36127, 38906, 39130, 42140, 51610, 54782, 55580, 68284, 72254, 77812, 78260, 85355, 97265, 103220, 109564, 119497, 136955, 144508, 170710, 180635, 194530, 221923, 238994, 252889, 273910, 341420, 361270, 389060, 443846, 477988, 505778, 547820, 597485, 722540, 836479, 887692, 1011556, 1109615, 1194970, 1264445, 1553461, 1672958, 2219230, 2389940, 2528890, 3106922, 3345916, 4182395, 4438460, 5057780, 6213844, 7767305, 8364790, 10874227, 15534610, 16729580, 21748454, 31069220, 43496908, 54371135, 108742270, 217484540]

約数ペア:

[(1, 217484540), (2, 108742270), (4, 54371135), (5, 43496908), (7, 31069220), (10, 21748454), (13, 16729580), (14, 15534610), (20, 10874227), (26, 8364790), (28, 7767305), (35, 6213844), (43, 5057780), (49, 4438460), (52, 4182395), (65, 3345916), (70, 3106922), (86, 2528890), (91, 2389940), (98, 2219230), (130, 1672958), (140, 1553461), (172, 1264445), (182, 1194970), (196, 1109615), (215, 1011556), (245, 887692), (260, 836479), (301, 722540), (364, 597485), (397, 547820), (430, 505778), (455, 477988), (490, 443846), (559, 389060), (602, 361270), (637, 341420), (794, 273910), (860, 252889), (910, 238994), (980, 221923), (1118, 194530), (1204, 180635), (1274, 170710), (1505, 144508), (1588, 136955), (1820, 119497), (1985, 109564), (2107, 103220), (2236, 97265), (2548, 85355), (2779, 78260), (2795, 77812), (3010, 72254), (3185, 68284), (3913, 55580), (3970, 54782), (4214, 51610), (5161, 42140), (5558, 39130), (5590, 38906), (6020, 36127), (6370, 34142), (7826, 27790), (7940, 27391), (8428, 25805), (10322, 21070), (10535, 20644), (11116, 19565), (11180, 19453), (12740, 17071), (13895, 15652)]