21291327800

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{641}}^1\times {\mathrm{8741}}^1$

素因数の和:9417

約数の個数: 96

約数和(自身を含む): 52194985200

約数和(自身を除く): 30903657400

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 380, 475, 641, 760, 950, 1282, 1900, 2564, 3205, 3800, 5128, 6410, 8741, 12179, 12820, 16025, 17482, 24358, 25640, 32050, 34964, 43705, 48716, 60895, 64100, 69928, 87410, 97432, 121790, 128200, 166079, 174820, 218525, 243580, 304475, 332158, 349640, 437050, 487160, 608950, 664316, 830395, 874100, 1217900, 1328632, 1660790, 1748200, 2435800, 3321580, 4151975, 5602981, 6643160, 8303950, 11205962, 16607900, 22411924, 28014905, 33215800, 44823848, 56029810, 106456639, 112059620, 140074525, 212913278, 224119240, 280149050, 425826556, 532283195, 560298100, 851653112, 1064566390, 1120596200, 2129132780, 2661415975, 4258265560, 5322831950, 10645663900, 21291327800]

約数ペア:

[(1, 21291327800), (2, 10645663900), (4, 5322831950), (5, 4258265560), (8, 2661415975), (10, 2129132780), (19, 1120596200), (20, 1064566390), (25, 851653112), (38, 560298100), (40, 532283195), (50, 425826556), (76, 280149050), (95, 224119240), (100, 212913278), (152, 140074525), (190, 112059620), (200, 106456639), (380, 56029810), (475, 44823848), (641, 33215800), (760, 28014905), (950, 22411924), (1282, 16607900), (1900, 11205962), (2564, 8303950), (3205, 6643160), (3800, 5602981), (5128, 4151975), (6410, 3321580), (8741, 2435800), (12179, 1748200), (12820, 1660790), (16025, 1328632), (17482, 1217900), (24358, 874100), (25640, 830395), (32050, 664316), (34964, 608950), (43705, 487160), (48716, 437050), (60895, 349640), (64100, 332158), (69928, 304475), (87410, 243580), (97432, 218525), (121790, 174820), (128200, 166079)]